{"title":"Kohler 83mm rebuild parts (CH25, CH730, CV740, KT740)","description":null,"products":[{"product_id":"lil-red-barn-cylinder-head-gasket-kit-crankshaft-seals-two-sets-of-piston-rings-replaces-kohler-24-108-14-24-108-14-s-24-108-05-s-24-108-14-2410805-2410814-83mm-standard-1-5mm-rings-style-a","title":"2 Ring Sets Gaskets Fits Kohler 83mm CH25 CH730 1.5mm","description":"\u003cp\u003eA ring and gasket kit for the Kohler 83mm twin-cylinder engines, 725cc and 747cc. The kit contains two standard 1.5mm Style A ring sets (top compression, second compression and three-piece oil ring), the complete gasket set (head, valve cover, intake and exhaust gaskets and small O-rings) and two crankshaft oil seals. It replaces ring set 24-108-14-S (earlier 24-108-04-S). Pistons, connecting rods and valves are not included; this kit re-rings and reseals an engine whose pistons are still good. The rings must match the grooves of the pistons being kept: measure the old top ring (1.5mm for Style A, 1.2mm for Style B) or read the old piston number, and if your parts list shows 25-108-01-S, that is the Style B set. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Hone both cylinders for a crosshatch, check for taper, and fit new valve stem seals while the engine is apart; rings will not seal a scored or glazed bore.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO RING SETS, GASKETS AND SEALS - Two standard 1.5mm Style A ring sets (top, second and three-piece oil ring), the complete gasket set with head and valve cover gaskets, and two crankshaft seals. Pistons are not included; this kit re-rings and reseals the engine.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-108-14-S - The Kohler Style A standard ring set, also written 2410814; the earlier number was 24-108-04-S. If your parts list shows 25-108-01-S instead, that is the 1.2mm Style B set and this is the wrong kit.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eSTYLE A ONLY - Rings must match the grooves of the pistons you are keeping. Style A takes a 1.5mm top ring and Style B takes 1.2mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eWHILE THE ENGINE IS APART - Hone both cylinders for a crosshatch, check the bores for taper, check the crank journals and rod clearance, and fit new valve stem seals. Rings will not seal a scored or glazed bore.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":34486160490653,"sku":"R9-NM4W-7RYS","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/715r0HNbNdL.jpg?v=1793400997"},{"product_id":"lil-red-barn-one-set-of-piston-rings-for-kohler-engines-replaces-kohler-part-24-108-14-s-and-2410814s-83mm-fits-ch25-ch26-ch730-ch735-and-others-two-day-standard-shipping-to-all-50-states","title":"83mm Ring Set Style A 1.5mm Fits Kohler CH25 CH730","description":"\u003cp\u003eOne Style A piston ring set for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. The set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. These are the standard size. It replaces 24-108-14-S (earlier number 24-108-04-S). Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style A takes a 1.5mm top ring and Style B takes 1.2mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE STANDARD STYLE A RING SET - The set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. One set does one cylinder; a twin needs two. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE A ONLY - Rings must match the grooves of the pistons you are keeping. Style A takes a 1.5mm top ring and Style B takes 1.2mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-108-14-S - Also written 24 108 14-S. The earlier number was 24-108-04-S. If your parts list shows it for your engine, this set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc, at the standard bore.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":34486183264413,"sku":"8U-OTRL-T0K0","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71CNmPAsdJL.jpg?v=1793401109"},{"product_id":"lil-red-barn-one-set-of-piston-rings-replaces-kohler-24-108-01-24-108-11-24-108-22-ch18-ch20-cv20-lh640-cv624-sv710-sv720-83mm-two-day-standard-shipping-to-all-50-states","title":"83mm Ring Set Style B 1.2mm Fits Kohler CH25 CH730","description":"\u003cp\u003eOne Style B piston ring set for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. The set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. These are the standard size. It replaces 25-108-01-S. Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style B takes a 1.2mm top ring and Style A takes 1.5mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE STANDARD STYLE B RING SET - The set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. One set does one cylinder; a twin needs two. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE B ONLY - Rings must match the grooves of the pistons you are keeping. Style B takes a 1.2mm top ring and Style A takes 1.5mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-108-01-S - Also written 25 108 01-S. If your parts list shows it for your engine, this set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc, at the standard bore.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":34486499737757,"sku":"DD-NA10-82OX","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/715YAHHqwTL.jpg?v=1793400837"},{"product_id":"lil-red-barn-2-sets-of-piston-rings-for-kohler-engines-replaces-kohler-part-24-108-14-s-and-2410814s-83mm-fits-ch25-ch26-ch730-ch735-and-others","title":"2 Ring Sets 83mm Style A 1.5mm Fits Kohler CH25 CH730","description":"\u003cp\u003eTwo Style A piston ring sets for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder, so this does both sides of a twin. Each set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. These are the standard size. Each set replaces 24-108-14-S (earlier number 24-108-04-S). Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style A takes a 1.5mm top ring and Style B takes 1.2mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO STANDARD STYLE A RING SETS - Each set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. One set per cylinder, so the two do both sides of a twin. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE A ONLY - Rings must match the grooves of the pistons you are keeping. Style A takes a 1.5mm top ring and Style B takes 1.2mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-108-14-S - Also written 24 108 14-S. The earlier number was 24-108-04-S. If your parts list shows it for your engine, each set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc, at the standard bore.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":34486524510365,"sku":"RM-IX70-P1MY","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71A5SWgshvL.jpg?v=1793400969"},{"product_id":"intake-exhaust-valves-and-seals-fits-kohler-ch25-ch740-04-0jlc-ekid","title":"Intake Exhaust Valves and Seals Fits Kohler CH25 CH740","description":"\u003cp\u003eIntake and exhaust valves with stem seals for both cylinders of the Kohler twin-cylinder engines: two intake valves, two exhaust valves and two valve stem seals. They replace exhaust valve 24-016-01-S, intake valve 24-017-01-S and stem seals 24-032-05-S. These are standard valves, not nitride-treated, so they can be lapped and ground to their seats; the later nitride-treated exhaust valve (32-016-01-S) cannot be. They fit the CH18, CH20, CH22, CH23, CH25, CH26, CH27, CH620, CH621, CH640, CH641, CH670, CH680, CH730, CH735, CH740, CH742, CH745 and CH750, the KT715 to KT745, the SV710 to SV840 and the LH755 and LH775. On installation, lap each valve to its seat, check seat width and the valve face, fit the new stem seals and set the valve clearance to the service manual figure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVALVES AND SEALS FOR BOTH CYLINDERS - Two intake valves, two exhaust valves and two valve stem seals.\u003c\/li\u003e\n\u003cli\u003eSTANDARD VALVES YOU CAN LAP - These are standard, not nitride-treated, so they can be lapped and ground to their seats. Nitride-treated exhaust valves (32-016-01-S) cannot be lapped.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER TWINS, 77MM, 80MM AND 83MM - CH18, CH20, CH22, CH23, CH25, CH26, CH27, CH620, CH621, CH640, CH641, CH670, CH680, CH730, CH735, CH740, CH742, CH745, CH750, KT715 to KT745, SV710 to SV840, LH755 and LH775.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-016-01-S, 24-017-01-S AND 24-032-05-S - Exhaust valve, intake valve and valve stem seal. If your parts list shows these numbers, this set covers them.\u003c\/li\u003e\n\u003cli\u003eINSTALLATION - Lap each valve to its seat, check the seat width and the valve face, fit the new stem seals, and set the valve clearance to the service manual figure.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009588752538,"sku":"04-0JLC-EKID","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/41XCBZblDBL.jpg?v=1793382061"},{"product_id":"83-25mm-010-over-overhaul-kit-fits-kohler-ch25-ch730-hy-1vij-dice","title":"83.25mm .010 Over Overhaul Kit Fits Kohler CH25 CH730","description":"\u003cp\u003eAn oversize overhaul kit for the Kohler 83mm twin-cylinder engines whose cylinders have been bored .010 over, to 83.25mm. The kit contains two 83.25mm pistons with matched rings, wrist pins and circlips, the complete gasket set (head, valve cover, intake and exhaust gaskets and small O-rings), two crankshaft oil seals and crankcase sealer. Rods, valves and bearings are not included. On a standard 83mm bore these pistons will not fit, so measure the bore or check the machine shop's records before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .010 over. Before assembly, check the piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOVERSIZE PISTONS, RINGS, GASKETS AND SEALS - Two 83.25mm (.010 oversize) pistons with matched rings, wrist pins and circlips, the complete gasket set, two crankshaft seals and crankcase sealer. Rods, valves and bearings are not included.\u003c\/li\u003e\n\u003cli\u003eFOR A CYLINDER BORED .010 OVER - The cylinders must already be machined to 83.25mm. On a standard 83mm bore these pistons will not go in; measure the bore or check the machine shop's records first.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .010 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775.\u003c\/li\u003e\n\u003cli\u003eWHEN AN OVERSIZE KIT IS RIGHT - When the bores are worn or scored past their limits and have been bored to the next size, or a previous rebuild left them at .010 over.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009591275674,"sku":"HY-1VIJ-DICE","price":289.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/719nHCqDkNL.jpg?v=1793382065"},{"product_id":"valve-stem-seals-for-kohler-ch20-ch25-ch730-cv-series-4-pack-qr-z859-rtlf","title":"Valve Stem Seals for Kohler CH20 CH25 CH730 CV Series 4 Pack","description":"\u003cp\u003eIntake valve stem seals for Kohler Command engines, replacing part number 25-032-14-S. Four seals per order. Kohler fits a stem seal to the intake valve only, one per cylinder, so a twin cylinder engine uses two seals and this pack covers two engines or one engine with spares. The exhaust valves are designed to run without a stem seal. Fits CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730 and CH740 along with the CV and ECV equivalents including CV20, CV23, CV25, CV640, CV730 and CV740. Cross-references to 12-032-02, 24-032-05-S and 66-032-05. Hardened valve seals produce blue smoke on startup and after extended idling. Inspect the valve guides at the same time, since a worn guide allows the valve to rock and will quickly ruin a new seal.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFITS KOHLER COMMAND ENGINES including CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730 and CH740, plus the CV and ECV equivalents such as CV20, CV23, CV25, CV640, CV730 and CV740. Replaces Kohler 25-032-14-S. Hardened valve seals are the reason one of these engines puffs blue smoke on startup and after a long idle, then clears up once it is working.\u003c\/li\u003e\n\u003cli\u003eFOUR SEALS. Kohler fits a stem seal to the intake valve only, one per cylinder, so a twin cylinder engine uses two. Four seals covers two engines, or one engine with a spare pair on the shelf. The exhaust valves run without a stem seal by design on these engines.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-032-14-S and cross-references to 12-032-02, 24-032-05-S and 66-032-05. If your parts diagram or dealer quote shows any of those numbers, this is the seal.\u003c\/li\u003e\n\u003cli\u003eSEALS ARE A SYMPTOM. A seal does not harden on its own schedule while everything else stays new. Check the valve guides at the same time, because a worn guide lets the valve rock in the bore and will destroy a fresh seal within a season. If the guide is worn, the guide is the repair and the seal is part of it.\u003c\/li\u003e\n\u003cli\u003eWHILE THE HEADS ARE OFF. Replace the head gaskets, check the valve seats for recession, roll the pushrods on a flat surface to check them, and set valve lash to your engine manual on reassembly. Getting the heads off is most of the labor on this job, so do everything that is in there while you are there.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009593045146,"sku":"QR-Z859-RTLF","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/412_OaPj7nL.jpg?v=1793382125"},{"product_id":"83-75mm-030-oversize-piston-ring-set-1-2mm-style-b-2-sets-for-kohler-c-sj-an76-kc2w","title":"83.75mm (.030 Oversize) Piston Ring Set 1.2mm Style B - 2 Sets for Kohler Command CH740, CH742, CH745, CH750, CV740, ECV749","description":"\u003cp\u003eThis piston ring set is designed for Kohler Command and Command Pro twin-cylinder engines using 83.75mm (.030 oversize) pistons with 1.2mm top compression rings (Style B). Includes two sets of piston rings for twin-cylinder engine rebuild applications. Compatible with Kohler engines including: CH25 CH26 CH730 CH735 CH740 CH742 CH745 CH750 CV25 CV26 CV724 CV725 CV730 CV740 CV745 CV750 LH755 LH775 SV710 SV715 SV720 SV725 SV730 SV735 SV740 SV810 SV820 SV830 SV840 ECV749 These rings replace or are compatible with Kohler part numbers: 24-108-01 24-108-11 25-108-01-S Kohler used two different ring thickness styles in these engines. This listing is for Style B pistons using 1.2mm top rings only. If your piston uses 1.5mm rings, these will not fit. These rings are .030 oversize (83.75mm) and are intended for engines where the cylinder has been machined to accept oversize components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e83.75mm (.030 Oversize) Piston Ring Set - 2 Sets Included Includes two complete piston ring sets designed for Kohler engines using 83.75mm (.030 oversize) pistons.\u003c\/li\u003e\n\u003cli\u003e1.2mm Top Ring Thickness - Style B Pistons Designed for pistons requiring 1.2mm top compression rings. Verify ring thickness before ordering.\u003c\/li\u003e\n\u003cli\u003eFits Kohler Command \u0026amp; Command Pro Engines Compatible with CH740, CH742, CH745, CH750, CV740, ECV749 and other 83mm engine platforms.\u003c\/li\u003e\n\u003cli\u003eDesigned for Rebuilt or Machined Cylinders These rings are .030 oversize and require cylinders to be properly bored to accept oversize piston rings.\u003c\/li\u003e\n\u003cli\u003eUpgrade Option for Complete Engine Repair If your piston shows wear or scoring, consider replacing the piston and rings together during rebuild using a compatible piston kit.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009595928730,"sku":"SJ-AN76-KC2W","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/611sv9GF_jL.jpg?v=1793382180"},{"product_id":"83-25mm-010-over-piston-with-rings-fits-kohler-ch25-18-1qmq-md1m","title":"83.25mm .010 Over Piston with Rings Fits Kohler CH25","description":"\u003cp\u003eOne .010 oversize piston for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. It comes with its own ring set, wrist pin and circlips. What the trade calls .010 is the 0.25mm step, so the piston fits a cylinder bored to 83.25mm; it will not go into a standard 83mm bore, so measure the finished bore before ordering. The rings come matched to the piston, so there is no need to measure the old ring grooves. Gaskets and seals are not included. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .010 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE .010 OVERSIZE PISTON WITH RINGS - One 83.25mm piston with its ring set, wrist pin and circlips. One cylinder; a twin needs two.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .010 is the 0.25mm step: 0.25mm over the 83.00mm standard bore gives 83.25mm. It will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The piston comes with its own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .010 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor. Gaskets and seals are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009600188570,"sku":"18-1QMQ-MD1M","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61fSDpfuBOL.jpg?v=1793382309"},{"product_id":"83mm-0-08mm-ring-set-style-b-1-2mm-fits-kohler-ch25-b0-9feb-54ht","title":"83mm +0.08mm Ring Set Style B 1.2mm Fits Kohler CH25","description":"\u003cp\u003eOne Style B piston ring set for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. The set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. These are the +0.08mm step (about .003 inch, sometimes written +.008), the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide; a bored cylinder needs the set for the size it was cut to. It replaces 25-108-02-S. Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style B takes a 1.2mm top ring and Style A takes 1.5mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE +0.08MM STYLE B RING SET - The set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. One set does one cylinder; a twin needs two. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE B ONLY - Rings must match the grooves of the pistons you are keeping. Style B takes a 1.2mm top ring and Style A takes 1.5mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-108-02-S - Also written 25 108 02-S. If your parts list shows it for your engine, this set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Plus 0.08mm (about .003 inch) is the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009604055194,"sku":"B0-9FEB-54HT","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/610lzfkn67L.jpg?v=1793382437"},{"product_id":"rebuild-kit-fits-kohler-kt715-kt725-kt730-kt740-83mm-u0-9nk4-mxub","title":"Rebuild Kit Fits Kohler KT715 KT725 KT730 KT740 83mm","description":"\u003cp\u003eA top-end overhaul kit for the Kohler KT715, KT725, KT730, KT735, KT740 and KT745, the 83mm-bore twins of 725cc and 747cc. The same 83mm engine is used in the CH25, CH26, CH27, CH730, CH740, CH745 and CH750, the CV25, CV27, CV724, CV725, CV730, CV740, CV745 and CV750, the SV710 to SV840 and the LH755 and LH775, and the kit fits those as well. It contains two 83mm standard pistons with wrist pins and circlips (replacing 24-874-30-S), two matched ring sets, the complete gasket set (head, valve cover, intake and exhaust gaskets and small O-rings), two crankshaft oil seals and crankcase sealer. Connecting rods, valves and bearings are not included. The pistons come with their own matched rings, so there is no need to measure the old ring grooves. Read the model and spec number on the blower housing decal before ordering. Before assembly, check each bore for taper and out of round, check ring end gap and groove side clearance, and follow the service manual for head bolt sequence and torque.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePISTONS, RINGS, GASKETS AND SEALS - Two 83mm standard pistons with wrist pins and clips, two matched ring sets, the complete gasket set with head and valve cover gaskets, two crankshaft seals and crankcase sealer. Connecting rods, valves and bearings are not included.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER KT715, KT725, KT730, KT735, KT740 AND KT745 - The 83mm-bore twins, 725cc and 747cc. Read the model and spec number on the blower housing decal before ordering.\u003c\/li\u003e\n\u003cli\u003eTHE SAME 83MM ENGINE AS THE CH, CV AND SV TWINS - The kit also fits the CH25, CH26, CH27, CH730, CH740, CH745 and CH750, the CV25, CV27, CV724, CV725, CV730, CV740, CV745 and CV750, the SV710 to SV840, and the LH755 and LH775.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-874-30-S - The Kohler standard 83mm piston, two of them, with their own matched rings, so the kit goes into engines built with either the 1.2mm or 1.5mm ring groove without measuring the old ones.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check each bore for taper and out of round; a bore past its limits needs boring and oversize pistons. Check ring end gap in the bore and side clearance in the groove, and tighten the head bolts in the sequence in the service manual.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009604448410,"sku":"U0-9NK4-MXUB","price":289.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71R8_mLCfKL.jpg?v=1793382452"},{"product_id":"83mm-rebuild-kit-fits-kohler-ch25-cv25-24-874-30-s-tx-yn7e-khg0","title":"83mm Rebuild Kit Fits Kohler CH25 CV25 24-874-30-S","description":"\u003cp\u003eA top-end rebuild kit for the Kohler 83mm twin-cylinder engines, 725cc and 747cc. The kit contains two standard 83mm pistons with wrist pins and circlips (replacing 24-874-30-S), two ring sets with a 1.2mm top ring and three-piece oil rings, the complete gasket set (head, intake, exhaust and breather gaskets and small O-rings), two crankshaft oil seals, head bolts with flanged nuts and sealing washers, and a tube of high-torque gray gasket maker. Connecting rods are not included. Pistons and rings are replaced together, so the kit goes into engines built with either the 1.2mm or 1.5mm ring groove. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Read the model and spec number on the blower housing decal before ordering, since the same horsepower was sold on more than one bore. Before assembly, check each bore for taper and out of round, check ring end gap and groove side clearance, and hone so the rings bed in.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePISTONS, RINGS, GASKETS, SEALS AND HEAD BOLTS - Two 83mm standard pistons with wrist pins and clips, two ring sets (1.2mm top ring) with three-piece oil rings, the complete gasket set, two crankshaft seals, head bolts with sealing washers and a tube of high-torque gasket maker. Connecting rods are not included.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-874-30-S - The Kohler standard 83mm piston, two of them. The rings that come with them cross-reference 24-108-01-S, 24-108-11-S and 25-108-01-S.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. Pistons and rings are replaced together, so the kit goes into either. If you are keeping your pistons and only need rings, buy the ring set that matches their grooves instead.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc. Read the model and spec number on the blower housing decal; horsepower alone will not identify the engine.\u003c\/li\u003e\n\u003cli\u003eWHAT TO MEASURE BEFORE THE KIT GOES ON - Check each bore for taper and out of round; a bore past its limits needs boring and oversize pistons. Check ring end gap in the bore each ring will run in and side clearance in the groove, and hone so the rings bed in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009604513946,"sku":"TX-YN7E-KHG0","price":289.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71gUDfAJR1L.jpg?v=1793382453"},{"product_id":"kohler-83mm-008-oversize-ring-kit-style-a-1-5mm-ch25-ch730-kf-atx3-1e7u","title":"Kohler 83mm +.008 Oversize Ring Kit Style A 1.5mm CH25 CH730","description":"\u003cp\u003eLil Red Barn 83mm +.008 Oversize Ring \u0026amp; Gasket Kit for Kohler Command Pro, 7000 Series, and Courage Engines (Style A Pistons) An oversized ring and gasket kit for Kohler 83mm bore twin-cylinder engines with Style A (1.5mm) pistons. The +.008 oversized rings are designed to restore compression on engines with slight cylinder wear or worn ring grooves where a tighter ring fit is needed. WHAT'S INCLUDED 2 piston ring sets (1.5mm top compression ring, +.008 oversized, second compression ring, and 3-piece oil control rings) Cylinder head gaskets Valve cover gaskets Crankcase breather gasket 2 crankshaft oil seals Sump\/oil pan sealant This is a RING kit for engines where existing Style A pistons are still serviceable. Pistons, connecting rods, and valves are NOT included. WHEN TO CHOOSE +.008 OVERSIZED RINGS +.008 oversized rings are the right choice when: Cylinder bore measures at or slightly beyond factory wear limits but remains within serviceable tolerance Existing ring grooves show wear and standard-size rings won't restore proper compression You want to extend engine life through a light re-ring rather than a complete rebuild If your engine has significant piston or cylinder damage, a complete rebuild kit with new pistons is the better choice. STYLE A vs STYLE B - VERIFY BEFORE ORDERING Kohler produced these engines with two different piston ring thicknesses: 1.5mm rings (Style A) - this kit 1.2mm rings (Style B) - different kit required Measure your existing top ring thickness on your current piston. If your rings measure 1.5mm, this kit is correct. If they measure 1.2mm, order the 1.2mm Style B ring kit instead. Note: This verification only matters for RING-ONLY kits like this one. Complete rebuild kits that include new pistons don't require ring style verification because the pistons and rings are replaced together as a matched set. COMPATIBLE KOHLER ENGINES (83mm BORE, STYLE A PISTONS) All the engines below share the same 83mm bore. Kohler marketed them under different names over the years, but the top-end parts are compatible when Style A pistons are installed: Command Pro Twin (horizontal shaft): CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750 Command Pro Twin (vertical shaft): CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750 7000 Series (KT): KT715, KT725, KT730, KT735, KT740, KT745 Courage and Courage Pro: SV710, SV715, SV720, SV725, SV730, SV735, SV740, SV810, SV820, SV830, SV840, LH755, LH775, ECV749 All are 83mm bore, 725cc or 747cc displacement, 4-cycle OHV twin-cylinder engines. CROSS-REFERENCES KOHLER part numbers Ring set: 24-108-15-S, 2410815-S, 25-108-15-S INSTALLATION NOTES When installing oversized rings, verify piston ring groove condition and cylinder bore measurements before assembly. Use a piston ring compressor for installation. Follow Kohler service manual torque specifications when reassembling the engine.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e83mm +.008 OVERSIZED RING KIT FOR STYLE A KOHLER ENGINES - Includes 2 piston ring sets (1.5mm top compression ring, +.008 oversized) plus complete gasket set with head gaskets, valve cover gaskets, crankcase breather gasket, and 2 crankshaft seals. Sump\/oil pan sealant included. This is a RING kit - pistons are NOT included. For buyers re-ringing existing Style A pistons.\u003c\/li\u003e\n\u003cli\u003eWHEN TO USE +.008 OVERSIZED RINGS - Choose oversized rings over standard size when: (1) your cylinder bore shows slight wear but is still within serviceable tolerance, (2) your existing ring grooves show wear and you need a tighter fit to restore compression, or (3) you're doing a light re-ring to extend engine life without a complete rebuild. If your engine has significant wear, consider a complete rebuild kit with new pistons instead.\u003c\/li\u003e\n\u003cli\u003eCRITICAL: STYLE A (1.5mm) PISTONS ONLY - Kohler used two ring groove designs on these engines: 1.5mm (Style A, this kit) and 1.2mm (Style B). This kit fits Style A pistons only. Measure your existing top ring thickness before ordering. If your engine uses 1.2mm rings, this kit will NOT fit - Lil Red Barn offers a separate 1.2mm Style B ring kit for those engines.\u003c\/li\u003e\n\u003cli\u003eCROSS-REFERENCES THE KOHLER PART NUMBERS - Replaces Kohler ring set part numbers 24-108-15-S, 2410815-S, and 25-108-15-S. If your Kohler service manual, dealer, or parts diagram references any of these numbers, this kit contains the components you need. Compatible with Command Pro (CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25-CV750), 7000 Series (KT715-KT745), and Courage (SV710-SV840, LH755, LH775, ECV749) engines using 83mm bore Style A pistons.\u003c\/li\u003e\n\u003cli\u003eWHILE THE ENGINE IS APART - Hone both cylinders so the new rings have a crosshatch to bed into, check the crank journals and rod clearance, and fit new valve stem seals and a breather gasket while you have access to them. Rings cure oil consumption on a bore that is still round and within taper; on a scored or hard glazed cylinder they will not seal. Pistons, wrist pins and clips are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009606545562,"sku":"KF-ATX3-1E7U","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71_8XIwWX_L.jpg?v=1793382530"},{"product_id":"83mm-engine-rebuild-kits-with-gaskets-piston-rings-for-kohler-command-kf-atx3-1e7u139-95","title":"83mm Engine Rebuild Kits with Gaskets \u0026 Piston Rings for Kohler Command \u0026 Command Pro CH25–CH26, CH730–CH750, CV25–CV26, SV710–SV840 (83mm +.008 Oversize – 1.5mm Rings)","description":"\u003cp\u003eThis rebuild kit is designed for Kohler Command and Command Pro twin-cylinder engines using .008 Oversize 83mm bore pistons with 1.2mm top ring thickness (Style B pistons). The kit includes two piston ring sets along with gaskets and seals for engine rebuild or compression restoration. Compatible with Kohler engines including: CH25 CH26 CH730 CH735 CH740 CH745 CH750 CV25 CV26 CV724 CV725 CV730 CV740 CV745 CV750 LH755 LH775 SV710 SV715 SV720 SV725 SV730 SV735 SV740 SV810 SV820 SV830 SV840 ECV749 These rings replace Kohler part numbers: 24-108-01-S 24-108-11-S 24-108-22-S 25-108-01-S Important: Kohler engines in this series used two different piston ring thickness designs. This kit fits engines using 1.2mm top compression rings only. Always measure your existing rings or verify piston style before ordering.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e83mm .008 Oversize Bore Rebuild Kit Includes gasket set, seals, and two piston ring sets designed for Kohler twin-cylinder engines with standard 83mm bore.\u003c\/li\u003e\n\u003cli\u003e1.2mm Top Ring Thickness – Style B Pistons Designed for pistons that use a 1.2mm top compression ring. Verify ring thickness before ordering to ensure compatibility.\u003c\/li\u003e\n\u003cli\u003eReplaces Kohler Ring Part Numbers Compatible with Kohler ring sets 24-108-01-S, 24-108-11-S, 24-108-22-S, 25-108-01-S.\u003c\/li\u003e\n\u003cli\u003eFits Kohler Command \u0026amp; Command Pro Engines Compatible with CH25, CH26, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV724, CV725, CV730, CV740, CV745, CV750, LH755, LH775, SV710–SV840, and ECV749 engines using 83mm bore pistons.\u003c\/li\u003e\n\u003cli\u003eVerify Ring Thickness Before Ordering Kohler used two different ring thickness styles on these engines. If your piston uses 1.5mm rings, this kit will NOT fit.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009606578330,"sku":"KF-ATX3-1E7U139.95","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71_8XIwWX_L_df6fb843-80e4-45a1-a2dc-200dcc629ce3.jpg?v=1793382531"},{"product_id":"2-ring-sets-gaskets-fits-kohler-83mm-ch25-ch730-1-2mm-2a-930m-rg8j","title":"2 Ring Sets Gaskets Fits Kohler 83mm CH25 CH730 1.2mm","description":"\u003cp\u003eA ring and gasket kit for the Kohler 83mm twin-cylinder engines, 725cc and 747cc. The kit contains two 1.2mm Style B ring sets (top compression, second compression and three-piece oil ring), the complete gasket set (head, valve cover, intake and exhaust and breather gaskets and small O-rings) and two crankshaft oil seals. It replaces ring set 25-108-01-S. Pistons, connecting rods and valves are not included; this kit re-rings and reseals an engine whose pistons are still good. The rings must match the grooves of the pistons being kept: measure the old top ring (1.2mm for Style B, 1.5mm for Style A) or read the old piston number, and if your parts list shows 24-108-14-S, that is the Style A set. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Hone both cylinders for a crosshatch, check for taper, and fit new valve stem seals while the engine is apart; rings will not seal a scored or glazed bore.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO RING SETS, GASKETS AND SEALS - Two 1.2mm Style B ring sets (top, second and three-piece oil ring), the complete gasket set with head and valve cover gaskets, and two crankshaft seals. Pistons are not included; this kit re-rings and reseals the engine.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-108-01-S - The Kohler Style B standard ring set, also written 25 108 01-S. If your parts list shows 24-108-14-S instead, that is the 1.5mm Style A set and this is the wrong kit.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eSTYLE B ONLY - Rings must match the grooves of the pistons you are keeping. Measure the old top ring (1.2mm here, 1.5mm for Style A) or read the old piston number before ordering.\u003c\/li\u003e\n\u003cli\u003eWHILE THE ENGINE IS APART - Hone both cylinders for a crosshatch, check the bores for taper, check the crank journals and rod clearance, and fit new valve stem seals. Rings will not seal a scored or glazed bore.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009606840474,"sku":"2A-930M-RG8J","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71YmIur8jcL.jpg?v=1793382545"},{"product_id":"83-50mm-020-over-piston-with-rings-fits-kohler-ch25-ku-7fa8-k0gh","title":"83.50mm .020 Over Piston with Rings Fits Kohler CH25","description":"\u003cp\u003eOne .020 oversize piston for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. It comes with its own ring set, wrist pin and circlips. What the trade calls .020 is the 0.50mm step, so the piston fits a cylinder bored to 83.50mm; it will not go into a standard 83mm bore, so measure the finished bore before ordering. The rings come matched to the piston, so there is no need to measure the old ring grooves. Gaskets and seals are not included. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .020 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE .020 OVERSIZE PISTON WITH RINGS - One 83.50mm piston with its ring set, wrist pin and circlips. One cylinder; a twin needs two.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .020 is the 0.50mm step: 0.50mm over the 83.00mm standard bore gives 83.50mm. It will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The piston comes with its own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .020 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor. Gaskets and seals are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009608085658,"sku":"KU-7FA8-K0GH","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61PC78Kfj7L.jpg?v=1793382587"},{"product_id":"2-ring-sets-83mm-style-b-1-2mm-fits-kohler-ch25-ch730-ku-yg77-983p","title":"2 Ring Sets 83mm Style B 1.2mm Fits Kohler CH25 CH730","description":"\u003cp\u003eTwo Style B piston ring sets for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder, so this does both sides of a twin. Each set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. These are the standard size. Each set replaces 25-108-01-S. Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style B takes a 1.2mm top ring and Style A takes 1.5mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO STANDARD STYLE B RING SETS - Each set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. One set per cylinder, so the two do both sides of a twin. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE B ONLY - Rings must match the grooves of the pistons you are keeping. Style B takes a 1.2mm top ring and Style A takes 1.5mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-108-01-S - Also written 25 108 01-S. If your parts list shows it for your engine, each set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc, at the standard bore.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009608118426,"sku":"KU-YG77-983P","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61TJMA4etKL.jpg?v=1793382588"},{"product_id":"2-ring-sets-83mm-0-08mm-style-a-1-5mm-fits-kohler-m4-wct1-1h5c","title":"2 Ring Sets 83mm +0.08mm Style A 1.5mm Fits Kohler","description":"\u003cp\u003eTwo Style A piston ring sets for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder, so this does both sides of a twin. Each set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. These are the +0.08mm step (about .003 inch, sometimes written +.008), the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide; a bored cylinder needs the set for the size it was cut to. Each set replaces 24-108-15-S (earlier number 24-108-05-S). Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style A takes a 1.5mm top ring and Style B takes 1.2mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO +0.08MM STYLE A RING SETS - Each set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. One set per cylinder, so the two do both sides of a twin. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE A ONLY - Rings must match the grooves of the pistons you are keeping. Style A takes a 1.5mm top ring and Style B takes 1.2mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-108-15-S - Also written 24 108 15-S. The earlier number was 24-108-05-S. If your parts list shows it for your engine, each set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Plus 0.08mm (about .003 inch) is the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009608151194,"sku":"M4-WCT1-1H5C","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61aH6TbxWuL.jpg?v=1793382589"},{"product_id":"2-ring-sets-gaskets-83mm-0-08mm-style-b-fits-kohler-b5-0thr-8vm8","title":"2 Ring Sets Gaskets 83mm +0.08mm Style B Fits Kohler","description":"\u003cp\u003eRe-ring and reseal package for the 83mm Kohler twin-cylinder engines. Two Style B piston ring sets, one for each cylinder, replacing 25-108-02-S, plus a complete gasket and seal set and both crankshaft seals. Rings and gaskets only; no pistons are supplied, so the ring style has to match the pistons already in the engine. Style B uses a 1.2mm top ring: measure the old top ring or the top piston groove, and if it reads 1.5mm you have Style A pistons and need 24-108-15-S instead. These rings are the +0.08mm step, about three thousandths of an inch over the 83.00mm standard bore and the smallest oversize offered, for a cylinder still near standard with light wear. If the block has been machined to a true oversize, order the ring set matching the bore the shop cut. Covers the CH25, CH26, CH730, CH735, CH740, CH745, CH750 and CH752, the vertical-shaft CV25, CV26, CV730, CV735, CV740, CV745 and CV750, and the SV710 through SV740 and SV810 through SV840. Before fitting, measure the bore for taper and out of round, check end gap and groove side clearance, and leave a honed finish for the rings to seat against.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO RING SETS AND A FULL GASKET SET - NO PISTONS - Two Style B ring sets, one per cylinder, replacing 25-108-02-S, with a complete gasket and seal set and both crankshaft seals. The pistons stay in the engine, which is why the ring style below has to be checked.\u003c\/li\u003e\n\u003cli\u003eMEASURE YOUR TOP RING - 1.2MM IS THIS KIT - Style B takes a 1.2mm top ring and Style A takes 1.5mm. Lay a caliper across the old top ring or the top groove. If it reads 1.5mm you have Style A pistons and need 24-108-15-S instead.\u003c\/li\u003e\n\u003cli\u003ePLUS 0.08MM, ABOUT .003 INCH - Kohler sizes its oversizes in millimeters: standard, +0.08mm, +0.25mm and +0.50mm. This is the smallest step, for a cylinder close to the 83.00mm standard with light wear, where a standard set leaves the end gap wide. A bored block needs the set for the size it was cut to.\u003c\/li\u003e\n\u003cli\u003eFITS THE 83MM KOHLER TWINS - CH25, CH26, CH730, CH735, CH740, CH745, CH750 and CH752; CV25, CV26, CV730, CV735, CV740, CV745 and CV750; SV710 through SV740 and SV810 through SV840. Read the model and spec numbers off the blower housing decal.\u003c\/li\u003e\n\u003cli\u003eCHECK THE CYLINDER BEFORE THE RINGS GO IN - Measure the bore for taper and out of round first; past a few thousandths of taper the block needs boring and pistons instead. Check end gap in the bore each ring will run in and side clearance in the groove, hone so the rings bed in, and clean the oil pan face to bare metal before the sealant goes on.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009612738714,"sku":"B5-0THR-8VM8","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71w2SB-UpwL.jpg?v=1793382700"},{"product_id":"83mm-piston-pair-with-rings-fits-kohler-ch25-ch730-bl-wky3-gsf5","title":"83mm Piston Pair with Rings Fits Kohler CH25 CH730","description":"\u003cp\u003eA pair of 83mm standard pistons with matched rings for the Kohler 83mm twin-cylinder engines, for rebuilding both cylinders. The kit contains two pistons with wrist pins and circlips and two ring sets with a 1.2mm top ring, second ring and three-piece oil ring. Gaskets, seals, connecting rods and valves are not included. These engines were built with two ring groove styles, 1.2mm and 1.5mm; because the pistons and rings are replaced together, the pair fits either without measuring the old rings. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755, LH775 and ECV749: all 83mm bore, 725cc or 747cc. Read the model and spec number on the blower housing decal before ordering, since horsepower alone does not identify the engine. Before assembly, check each bore for taper and out of round, check ring end gap and groove side clearance, and use a ring compressor. Each piston replaces Kohler 24-874-30-S.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO PISTONS WITH RINGS - Two 83mm standard pistons with wrist pins and circlips, and two matched ring sets with a 1.2mm top ring. Gaskets, seals, connecting rods and valves are not included.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm (Style B) and 1.5mm (Style A) ring grooves. New pistons come with their own matched rings, so the pair goes into either engine without measuring the old rings.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755, LH775 and ECV749. All have the 83mm bore, 725cc or 747cc.\u003c\/li\u003e\n\u003cli\u003eREAD THE ENGINE DECAL FIRST - The model and spec number on the blower housing identify the engine. Horsepower alone does not, because the same horsepower was sold on more than one bore.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check each bore for taper and out of round; a bore past its limits needs boring and oversize pistons, not standard ones. Check ring end gap in the bore and side clearance in the groove, and use a ring compressor.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009612771482,"sku":"BL-WKY3-GSF5","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71976-ia7US.jpg?v=1793382700"},{"product_id":"2-crankshaft-seals-compatible-with-kohler-ch18-ch20-ch22-ch25-ch620-ch-384905025968","title":"2 Crankshaft Seals Compatible with Kohler CH18, CH20, CH22, CH25, CH620, CH740, CH750 CH640","description":"\u003cp\u003e2 Crankshaft Seals Fits or Compatible with Kohler CH18, CH20, CH22, CH25, CH620, CH740, CH750, CH640 Note: Replace both seals together - a saw that needed one usually has the other hardening alongside it Replaces or Compatible with These Kohler Part Numbers: 1- 24 032 01, 24 032 19 Front Flywheel Crankshaft Seal 1- 52 032 08, 25 032 06 Rear Pto Crankshaft Seals\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e24 032 01, 24 032 19, 52 032 08, 25 032 06\u003c\/li\u003e\n\u003cli\u003eLil Red Barn\u003c\/li\u003e\n\u003cli\u003eCH18, CH20, CV20, CH25, CV25, CH23, CH22 CV22 CV23\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009615556762,"sku":"384905025968","price":16.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/41Sye5yW1uL.jpg?v=1793382779"},{"product_id":"complete-kohler-engine-rebuild-kit-83mm-ch25-ch730-kt740-rods-n8-ugv5-aakt","title":"Complete Kohler Engine Rebuild Kit 83mm CH25 CH730 KT740 Rods","description":"\u003cp\u003eComplete rebuild kit for the Kohler 83mm twin-cylinder engines, with the parts for both the top end and the bottom end. The kit contains two 83mm standard pistons with wrist pins and circlips, two matched ring sets, two connecting rods, intake and exhaust valves, the complete gasket set (head, valve cover, intake, exhaust and breather gaskets and the small O-rings), two crankshaft oil seals and a tube of crankcase sealer. Bearings, camshaft and lifters are not included. These engines were built with two ring groove styles, 1.2mm and 1.5mm; because the pistons and rings are replaced together as a matched set, the kit fits either without measuring the old rings. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745 and CH750, the CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745 and CV750, the KT715, KT725, KT730, KT735, KT740 and KT745, the SV710 to SV840, the LH755 and LH775 and the ECV749: all 83mm bore, 725cc or 747cc. It replaces ring sets 24-108-01-S, 24-108-11-S and 25-108-01-S and head gasket 24-041-13-S. Read the model and spec number on the blower housing decal before ordering, since horsepower alone does not identify the engine. Before assembly, check each bore for taper and out of round, check ring end gap and groove side clearance, check the crank journals for the new rods, and lap the new valves to their seats. The pistons replace Kohler 24-874-30-S.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEVERYTHING FOR A FULL REBUILD - Two 83mm standard pistons with wrist pins and clips, two matched ring sets, two connecting rods, intake and exhaust valves, the complete gasket set, two crankshaft seals and a tube of crankcase sealer. Bearings, camshaft and lifters are not included.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with two ring groove styles, 1.2mm (Style B) and 1.5mm (Style A). The new pistons come with their own matched rings, so the kit goes into either engine without measuring the old rings.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755, LH775 and ECV749. All have the 83mm bore, 725cc or 747cc.\u003c\/li\u003e\n\u003cli\u003eREPLACES RING SETS 24-108-01-S, 24-108-11-S AND 25-108-01-S, AND HEAD GASKET 24-041-13-S - Read the model and spec number on the blower housing decal before ordering. Horsepower alone does not identify the engine, because the same horsepower was sold on more than one bore.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check each bore for taper and out of round; a bore past its limits needs boring and oversize pistons, not this standard kit. Check ring end gap in the bore and side clearance in the groove, check the crank journals before fitting the new rods, and lap the new valves to their seats.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009616998554,"sku":"N8-UGV5-AAKT","price":499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71NsWS-z3DL.jpg?v=1793382822"},{"product_id":"kohler-valve-guide-inserts-and-seal-2-pack-ch25-ch740-vn-0sr7-cmi5","title":"Kohler Valve Guide Inserts and Seal 2 Pack CH25 CH740","description":"\u003cp\u003eTwo bronze valve guide inserts and one valve stem seal for Kohler Command and Command Pro cylinder heads. The seal replaces Kohler 25 032 14-S. Suits CH18, CH20, CH22, CH23, CH25, CH730 and CH740 and the vertical shaft CV equivalents. Why this part exists: on these engines the valve guides are machined into the head casting and Kohler does not sell a separate guide, so there is no Kohler part number for one. Kohler's published repair for a worn guide is to ream it 0.25mm oversize with reamer 25 455 12-S and fit a valve with an oversize stem. These inserts are the alternative route, which is to bore out the worn integral guide and press a bronze insert into the casting. That is machine shop work. It means boring concentric with the valve seat, pressing the insert home, reaming it to finished size and recutting the seat to match, and it needs a head fixture, a piloted reamer and a seat cutter. If you are not set up for that, send the head and these inserts to a cylinder head shop. Specifications for the job: new guide inside diameter 7.038 to 7.058mm; replace at 7.134mm on the intake or 7.159mm on the exhaust; standard reamer 7.048mm and oversize reamer 7.298mm; stem to guide clearance 0.038 to 0.076mm intake and 0.050 to 0.088mm exhaust; seat and face angle 45 degrees. Measure the valve stems you plan to reuse as well as the guides. If the seats are sound and only the guides are worn, the oversize stem route may be simpler: intake 24 017 02-S and exhaust 32 016 02-S are the 0.25mm oversize stem valves, against standard 24 017 01-S and 32 016 01-S.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO GUIDE INSERTS AND ONE VALVE SEAL - Two bronze valve guide inserts and one valve stem seal, the seal replacing Kohler 25 032 14-S. Suits the Command and Command Pro single and twin cylinder heads, CH18, CH20, CH22, CH23, CH25, CH730 and CH740, and the vertical shaft CV equivalents. Read the model and spec numbers off the blower housing decal rather than going by horsepower.\u003c\/li\u003e\n\u003cli\u003eKOHLER DOES NOT SELL A VALVE GUIDE - THIS IS WHY THIS PART EXISTS - On these engines the guides are machined into the head casting. There is no guide to unbolt and no Kohler part number for one, which is why you will not find it in the parts list however long you look. Kohler's own repair for a worn guide is to ream it 0.25mm oversize with reamer 25 455 12-S and fit a valve with an oversize stem. These inserts are the other route: bore the worn integral guide out and press a bronze insert in.\u003c\/li\u003e\n\u003cli\u003eTHIS IS BENCH WORK, NOT A ROADSIDE FIX - Fitting an insert means boring the original guide concentric with the valve seat, pressing the insert in, then reaming it to size and recutting the seat to match. That needs a head fixture, a piloted reamer and a seat cutter. If you have those, this is a straightforward job and a cheaper head than a new one. If you do not, hand the head and these inserts to a shop. Nobody fits a guide insert with hand tools and gets a valve to seal afterwards.\u003c\/li\u003e\n\u003cli\u003eTHE NUMBERS THE JOB RUNS TO - New guide inside diameter is 7.038 to 7.058mm. Replace when wear reaches 7.134mm on the intake or 7.159mm on the exhaust. The standard reamer cuts 7.048mm and the oversize 7.298mm. Stem to guide clearance is 0.038 to 0.076mm on the intake and 0.050 to 0.088mm on the exhaust. Seat and face angle is 45 degrees. Measure the stems you intend to reuse as well as the guides, because a worn stem in a new guide gives the same oil consumption you started with.\u003c\/li\u003e\n\u003cli\u003eDECIDE BETWEEN THE TWO REPAIRS FIRST - If the seats are good and only the guides are loose, the oversize stem route is quicker and needs no insert: intake 24 017 02-S and exhaust 32 016 02-S are the 0.25mm oversize stem valves, against standard 24 017 01-S and 32 016 01-S. If the head has already been reamed once, or the guide is worn past the oversize reamer, inserts are what is left. Check the seats and valve faces while the head is off, because a guide job and a valve job are usually one job.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009619128474,"sku":"VN-0SR7-CMI5","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/612SKCbndML.jpg?v=1793382889"},{"product_id":"2-pistons-83-25mm-010-over-fits-kohler-ch25-ch730-vp-xkdu-o30c","title":"2 Pistons 83.25mm .010 Over Fits Kohler CH25 CH730","description":"\u003cp\u003eTwo .010 oversize pistons for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder. Each comes with its own ring set, wrist pin and circlips. What the trade calls .010 is the 0.25mm step, so the pistons fit a cylinder bored to 83.25mm; they will not go into a standard 83mm bore, so measure the finished bore before ordering. The rings come matched to the pistons, so there is no need to measure the old ring grooves. Gaskets and seals are not included. They fit the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .010 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO .010 OVERSIZE PISTONS WITH RINGS - Two 83.25mm pistons, each with its own ring set, wrist pin and circlips. One per cylinder, so this does both sides of a twin.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .010 is the 0.25mm step: 0.25mm over the 83.00mm standard bore gives 83.25mm. These will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The pistons come with their own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .010 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor. Gaskets and seals are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009620701338,"sku":"VP-XKDU-O30C","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71WGMYWIRQL.jpg?v=1793382933"},{"product_id":"4-push-rods-kohler-ch18-ch20-ch25-ch730-ch740-24-411-05-s-384980802958","title":"4 Push Rods Kohler CH18 CH20 CH25 CH730 CH740 24-411-05-S","description":"\u003cp\u003eSet of four push rods for Kohler Command twin-cylinder engines. Replaces Kohler part number 24-411-05-S, also written 24 411 05-S and 2441105. Kohler sells this push rod individually. A twin-cylinder engine uses four of them, two per cylinder. This listing is a set of four, which does the whole engine in one order. Kohler uses the same push rod part number for intake and exhaust on these engines, so there is nothing to sort on the bench and nothing to order twice. Fits CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730, CH740 and CH750, and the CV, ECH and ECV versions of the same engines. Useful property of this part: it spans both the 77mm and 83mm families, so the CH620 and CH640 displacement problem that catches people out on ring and piston orders does not apply here. If you are replacing bent push rods, find out why they bent. These engines use hydraulic lifters and have no valve lash adjustment. A lifter that has gummed up from neglected oil and stuck at full extension will jam the valve train and fold a rod. New rods into a bad lifter will bend again. Inspect the lifters and change the oil. After assembly, turn the engine over by hand through a full cycle before cranking it, so the lifters can bleed down and so you can feel any binding before the starter finds it. Rocker arms, rocker nuts, lifters, valve cover gaskets and valve covers are not included.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSET OF FOUR PUSH RODS - Replaces Kohler part number 24-411-05-S, also written 24 411 05-S and 2441105. Kohler sells this rod one at a time. A twin-cylinder engine needs four, so this set does the whole engine in one order instead of four.\u003c\/li\u003e\n\u003cli\u003eONE ROD FITS BOTH INTAKE AND EXHAUST - Kohler uses a single push rod part number for all four valves on the Command twins. There is no separate intake and exhaust number to get wrong, which is not true of every engine in this class.\u003c\/li\u003e\n\u003cli\u003eFITS THE WHOLE COMMAND TWIN RANGE - CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730, CH740 and CH750, and the CV, ECH and ECV equivalents. This part spans both the 77mm and the 83mm engines, so the displacement question that catches people out on rings and pistons does not apply here.\u003c\/li\u003e\n\u003cli\u003eBENT RODS USUALLY POINT AT A LIFTER - These engines run hydraulic lifters and have no valve lash adjustment. A lifter that has gummed up and stuck extended will jam the valve train and fold a push rod. If you are replacing bent rods, pull and inspect the lifters as well, and change the oil while you are in there.\u003c\/li\u003e\n\u003cli\u003eTURN IT OVER BY HAND BEFORE YOU CRANK IT - After assembly, rotate the engine through a full cycle by hand to let the lifters bleed down and to confirm nothing is binding. Rocker arms, rocker nuts, lifters, valve cover gaskets and valve covers are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009621389466,"sku":"384980802958","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/51TgU5SKiPL.jpg?v=1793382967"},{"product_id":"83-75mm-030-over-piston-with-rings-fits-kohler-ch25-cq-opra-6zyj","title":"83.75mm .030 Over Piston with Rings Fits Kohler CH25","description":"\u003cp\u003eOne .030 oversize piston for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. It comes with its own ring set, wrist pin and circlips. What the trade calls .030 is the 0.75mm step, so the piston fits a cylinder bored to 83.75mm; it will not go into a standard 83mm bore, so measure the finished bore before ordering. The rings come matched to the piston, so there is no need to measure the old ring grooves. Gaskets and seals are not included. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .030 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE .030 OVERSIZE PISTON WITH RINGS - One 83.75mm piston with its ring set, wrist pin and circlips. One cylinder; a twin needs two.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .030 is the 0.75mm step: 0.75mm over the 83.00mm standard bore gives 83.75mm. It will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The piston comes with its own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .030 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor. Gaskets and seals are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009621422234,"sku":"CQ-OPRA-6ZYJ","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/615TTsPP1AL.jpg?v=1793382968"},{"product_id":"83mm-piston-with-rings-fits-kohler-ch25-24-874-30-s-cd-imf4-1i84","title":"83mm Piston with Rings Fits Kohler CH25 24-874-30-S","description":"\u003cp\u003eOne 83mm standard piston for the Kohler 725cc and 747cc twin-cylinder engines, with its matched ring set (top, second and three-piece oil ring), wrist pin and circlips. It replaces 24-874-30-S. These are twin-cylinder engines: one piston does one cylinder, and both cylinders need two. The piston comes with its own rings, so there is no need to measure the old ring grooves. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. For cylinders at the 83mm standard size; a bored cylinder needs an oversize piston. Before assembly, check the bore for taper and out of round, check ring end gap, use a ring compressor and fit the piston the right way round.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE PISTON WITH RINGS - One 83mm standard piston with its matched ring set (top, second and three-piece oil ring), wrist pin and circlips. These engines are twins: one piston does one cylinder, both cylinders need two.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-874-30-S - The Kohler standard 83mm piston. If your parts list shows 24-874-30-S, this is the piston.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The piston comes with its own matched rings, so it goes into either without measuring the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. For cylinders at the 83mm standard size; a bored cylinder needs an oversize piston.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the bore for taper and out of round, check ring end gap in the bore, use a ring compressor, and fit the piston the right way round.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009621455002,"sku":"CD-IMF4-1I84","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71Tg2DbSt0S.jpg?v=1793382969"},{"product_id":"83mm-0-08mm-ring-set-style-a-1-5mm-fits-kohler-ch25-xn-z3xt-2wa8","title":"83mm +0.08mm Ring Set Style A 1.5mm Fits Kohler CH25","description":"\u003cp\u003eOne Style A piston ring set for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, for one cylinder; a twin needs two. The set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. These are the +0.08mm step (about .003 inch, sometimes written +.008), the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide; a bored cylinder needs the set for the size it was cut to. It replaces 24-108-15-S (earlier number 24-108-05-S). Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style A takes a 1.5mm top ring and Style B takes 1.2mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE +0.08MM STYLE A RING SET - The set has a 1.5mm top compression ring, a second ring and a three-piece oil ring. One set does one cylinder; a twin needs two. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE A ONLY - Rings must match the grooves of the pistons you are keeping. Style A takes a 1.5mm top ring and Style B takes 1.2mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 24-108-15-S - Also written 24 108 15-S. The earlier number was 24-108-05-S. If your parts list shows it for your engine, this set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Plus 0.08mm (about .003 inch) is the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009647210650,"sku":"XN-Z3XT-2WA8","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61op7-EOVdL.jpg?v=1793383187"},{"product_id":"kohler-exhaust-valve-32-016-01-s-ch25-ch730-ch740-ch750-bu-xxuc-wy6y","title":"Kohler Exhaust Valve 32-016-01-S CH25 CH730 CH740 CH750","description":"\u003cp\u003eOne standard exhaust valve for Kohler Command and Command Pro engines, replacing 32-016-01-S. Note on numbering: 24-016-01-S was the original part number and is still what appears in a lot of service literature and on shop shelf labels. Kohler superseded it to 32-016-01-S, and Kohler's own parts note reads to use 32-016-01-S in its place, so both numbers lead to this valve. This listing supplies one valve. Kohler's V twins have two cylinders and two exhaust valves, so order two if both heads are being done. Fits CH18, CH20, CH22, CH23, CH25, CH26, CH730, CH740 and CH750 and the vertical shaft CV equivalents; identify the engine from the model and spec numbers on the blower housing decal. Related parts: the intake valve is 24-017-01-S standard, the 0.25mm oversize stem versions are 32-016-02-S exhaust and 24-017-02-S intake, and the valve stem seal is 25-032-14-S. If the cylinder head guide has already been reamed 0.25mm oversize, the oversize stem valve is the one you need rather than this standard one. On diagnosis: a burnt exhaust valve is usually the result of a receded seat, a worn guide letting the valve sit crooked, carbon holding it off the seat, or an engine run lean or hot, and a new valve fitted into a worn guide or onto a pitted seat will not last. Guide wear limit on the exhaust is 7.159mm against a new size of 7.038 to 7.058mm. Seat and face angle is 45 degrees and stem to guide clearance on the exhaust is 0.050 to 0.088mm. Lap the new valve until the seating ring is even, clean all lapping compound from the port and guide, and fit a new stem seal while the head is apart. These engines use hydraulic lifters, so there is no lash adjustment after assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE STANDARD EXHAUST VALVE PER ORDER - This is one valve. Kohler's twins have two cylinders and therefore two exhaust valves, so order two if you are doing both heads. Replaces 32-016-01-S. If your manual or your old parts list says 24-016-01-S, that is the superseded number for the same valve and Kohler's own note reads to use 32-016-01-S in its place, so you are in the right place either way.\u003c\/li\u003e\n\u003cli\u003eBOTH NUMBERS, AND WHY THE OLD ONE IS HERE - 24-016-01-S was the original number and it still appears in service literature, on old parts tickets and on shop shelf labels, which is why it is on this page. Kohler superseded it to 32-016-01-S. There is also a 0.25mm oversize stem version, 32-016-02-S, for a head whose guide has been reamed oversize. If your head has been reamed, that is the valve you want rather than this one.\u003c\/li\u003e\n\u003cli\u003eFITS THE COMMAND AND COMMAND PRO ENGINES - CH18, CH20, CH22, CH23, CH25, CH26, CH730, CH740 and CH750, and the vertical shaft CV equivalents. Read the model and spec numbers off the blower housing decal. The matching intake valve is 24-017-01-S standard, or 24-017-02-S with the 0.25mm oversize stem, and the valve stem seal is 25-032-14-S. Exhaust valves work harder than intakes on these engines and usually fail first, which is why they are sold singly.\u003c\/li\u003e\n\u003cli\u003eWHY A VALVE BURNS, AND WHAT TO FIX WITH IT - A burnt exhaust valve is a symptom. The usual causes are a receded seat, a guide worn enough to let the valve sit crooked, carbon holding it off the seat, or an engine run lean or hot. A new valve in a worn guide or on a pitted seat buys a few hours. Check guide wear with a dial indicator, recut the seat, and lap the valve in. Guide wear limit on the exhaust is 7.159mm against a new size of 7.038 to 7.058mm.\u003c\/li\u003e\n\u003cli\u003eSETTING IT UP - Seat and face angle is 45 degrees. Stem to guide clearance on the exhaust is 0.050 to 0.088mm. Lap until the seating ring is even all the way round, then clean every trace of compound out of the port and guide. These engines use hydraulic lifters, so there is no lash to set, but turn the engine over by hand before the first start. Fit a new stem seal while the head is apart and check the gasket surface for flatness.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009647407258,"sku":"BU-XXUC-WY6Y","price":17.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/21qsSksAJCL.jpg?v=1793383188"},{"product_id":"intake-valve-compatible-with-kohler-ch23-ch25-ch26-ch740-ch742-ch750-c-pi-30tq-45vp","title":"Intake Valve Compatible With Kohler CH23, CH25, CH26, CH740 CH742 CH750, CH18, CH20, CH22, SV840 Replaces Part # 24-017-01-S","description":"\u003cp\u003eIntake Valve Compatible With Kohler CH23, CH25, CH26, CH740 CH742 CH750, CH18, CH20, CH22, SV840 Replaces Part # 24-017-01-S\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE STANDARD INTAKE VALVE - This is one valve, replacing Kohler 24-017-01-S. Kohler's twins have two cylinders and therefore two intake valves, so order two if you are doing both heads. There is also a 0.25mm oversize stem version, 24-017-02-S, for a head whose guide has been reamed oversize.\u003c\/li\u003e\n\u003cli\u003eFITS THE COMMAND AND COMMAND PRO TWINS - CH23, CH25, CH26, CH740 and CH750, together with the vertical shaft CV equivalents. Read the model and spec numbers off the blower housing decal. The matching exhaust valve is 32-016-01-S, which supersedes the older 24-016-01-S, and the valve stem seal is 25-032-14-S.\u003c\/li\u003e\n\u003cli\u003eINTAKE AND EXHAUST ARE NOT THE SAME PART - Do not fit an intake valve in an exhaust seat. The exhaust valve runs hotter, works harder and usually fails first, which is why they are sold separately. If you are in the head for a burnt exhaust valve, the intake is often still serviceable.\u003c\/li\u003e\n\u003cli\u003eCHECK THE SEAT AND THE GUIDE BEFORE FITTING - A new valve onto a pitted seat or into a worn guide buys a few hours. Seat and face angle is 45 degrees. Guide inside diameter when new is 7.038 to 7.058mm, with a wear limit of 7.134mm on the intake. Stem to guide clearance on the intake is 0.038 to 0.076mm.\u003c\/li\u003e\n\u003cli\u003eSETTING IT UP - Lap the valve until the seating ring is even all the way round, then clean every trace of lapping compound out of the port and the guide before assembly. Fit a new stem seal while the head is apart. These engines use hydraulic lifters, so there is no lash to set, but turn the engine over by hand before the first start.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009648816282,"sku":"PI-30TQ-45VP","price":23.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/319i_fGZywL.jpg?v=1793383205"},{"product_id":"83mm-008-oversize-piston-ring-set-1-2mm-top-ring-style-b-for-kohler-co-3o-3pp4-fhwf","title":"83mm +.008 Oversize Piston Ring Set 1.2mm Top Ring Style B for Kohler Command Engines Replaces 24-108-02 for tighter ring fit","description":"\u003cp\u003ehis piston ring set is designed for Kohler Command and Command Pro twin-cylinder engines using 83mm bore pistons. Compatible with the Kohler 83mm engine family including: CH25 CH26 CH730 CH735 CH740 CH745 CH750 CV25 CV26 CV724 CV725 CV730 CV740 CV745 CV750 LH755 LH775 SV710 SV715 SV720 SV725 SV730 SV735 SV740 SV810 SV820 SV830 SV840 ECV749CH25 CH26 CH730 CH735 CH740 CH745 CH750 CV25 CV26 CV724 CV725 CV730 CV740 CV745 CV750 LH755 LH775 SV710 SV715 SV720 SV725 SV730 SV735 SV740 SV810 SV820 SV830 SV840 ECV749.These rings are commonly used in equipment powered by Kohler Command engines including:Zero Turn Mowers Riding Lawn Mowers Generators Stump Grinders Pressure Washers Concrete Saws Wood Chippers Blowers Floor Buffers Light TowersZero Turn Mowers Riding Lawn Mowers Generators Stump Grinders Pressure Washers Concrete Saws Wood Chippers Blowers Floor Buffers Light TowersZero Turn Mowers Riding Lawn Mowers Generators Stump Grinders Pressure Washers Concrete Saws Wood Chippers Blowers Floor Buffers Light Towers. Replacing worn piston rings can help restore compression and engine performance during service or repair. If the piston itself shows scoring or wear, replacing the piston and rings together is recommended for best results.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e83mm Standard Bore Piston Ring Set – Style B Designed for Kohler Command and Command Pro twin-cylinder engines using 83mm .008 oversize bore pistons with 1.2mm top compression rings. Tighter ring fit\u003c\/li\u003e\n\u003cli\u003eCompatible with Kohler Command Engine Family Fits CH25, CH26, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV724, CV725, CV730, CV740, CV745, CV750 and other 83mm bore engines.\u003c\/li\u003e\n\u003cli\u003eVerify Ring Thickness Before Ordering Kohler used two different piston ring styles in these engines. This listing is for Style B pistons requiring 1.2mm top rings.\u003c\/li\u003e\n\u003cli\u003eRestore Compression During Engine Repair Ideal for replacing worn piston rings during engine maintenance or compression restoration.\u003c\/li\u003e\n\u003cli\u003eUpgrade Option for Complete Engine Repair If your piston shows wear or scoring, consider replacing the piston and rings together during rebuild using a compatible piston kit.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009649176730,"sku":"3O-3PP4-FHWF","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61LrBKWLGyL.jpg?v=1793383225"},{"product_id":"2-ring-sets-83mm-0-08mm-style-b-1-2mm-fits-kohler-e4-g6q6-k0hd","title":"2 Ring Sets 83mm +0.08mm Style B 1.2mm Fits Kohler","description":"\u003cp\u003eTwo Style B piston ring sets for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder, so this does both sides of a twin. Each set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. These are the +0.08mm step (about .003 inch, sometimes written +.008), the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide; a bored cylinder needs the set for the size it was cut to. Each set replaces 25-108-02-S. Rings only: pistons, gaskets and seals are not included. The rings must match the grooves of the pistons being kept: Style B takes a 1.2mm top ring and Style A takes 1.5mm, so measure the old top ring or the top groove before ordering. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch and check the end gap of each ring in its bore before assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO +0.08MM STYLE B RING SETS - Each set has a 1.2mm top compression ring, a second ring and a three-piece oil ring. One set per cylinder, so the two do both sides of a twin. Rings only: no pistons, gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eSTYLE B ONLY - Rings must match the grooves of the pistons you are keeping. Style B takes a 1.2mm top ring and Style A takes 1.5mm. Measure the old top ring or the top groove before ordering.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-108-02-S - Also written 25 108 02-S. If your parts list shows it for your engine, each set covers it.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775. Plus 0.08mm (about .003 inch) is the smallest ring oversize, for a standard bore with light wear where a standard set leaves the end gap wide.\u003c\/li\u003e\n\u003cli\u003eCHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009650323610,"sku":"E4-G6Q6-K0HD","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61LrBKWLGyL_724be1ed-3eda-4472-b5d0-134e317609af.jpg?v=1793383239"},{"product_id":"valve-cover-o-rings-compatible-with-kohler-cv18-cv20-cv22-cv25-cv620-c-pi-k609-h32q","title":"Valve Cover O-Rings Compatible with Kohler CV18, CV20, CV22, CV25, CV620, CV740, CV750, CV23, Replaces #24-153-30-S","description":"\u003cp\u003eKeep your engine running smoothly with these Two Valve Cover O-rings Compatible with Kohler CV18, CV20 CV22 CV25 CV620 CV740 CV750 CV23, Replaces # 24-153-30-S. These high-quality O-rings are designed to provide a reliable seal and prevent leaks in your Kohler engine's valve cover. Crafted from durable materials, they offer long-lasting performance and resistance to wear and tear. Ensure proper maintenance and extend the lifespan of your equipment with these essential replacement parts. Upgrade your Kohler engine today with these compatible valve cover O-rings and experience smooth, uninterrupted operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO VALVE COVER O-RINGS - A pair of valve cover O-rings replacing Kohler 24-153-30-S, for the CV18, CV20, CV22, CV23, CV25, CV620, CV740 and CV750. Two per order, which is one per valve cover on a twin.\u003c\/li\u003e\n\u003cli\u003eWHY THEY LEAK, AND WHEN TO CHANGE THEM - A valve cover O-ring hardens and takes a set, and then it weeps oil down the side of the engine where it looks like a far worse leak than it is. They cost very little and they are the first thing to change on an oil film around the valve covers.\u003c\/li\u003e\n\u003cli\u003eFIT IT DRY AND DO NOT OVERTIGHTEN - Clean the groove in the cover and the sealing face on the head before the new ring goes in. These seal by being squeezed, not by being crushed, so a cover pulled down too hard will distort and leak again. Check the cover itself is flat while it is off.\u003c\/li\u003e\n\u003cli\u003eWHAT ELSE TO LOOK AT WHILE THE COVER IS OFF - This is the easiest look you will get at the valve train. Check the rocker arms for wear and the pushrods for straightness by rolling them on a flat surface. On a hydraulic lifter engine there is no lash to set, but a noisy top end is worth investigating while you are in there.\u003c\/li\u003e\n\u003cli\u003eRELATED PARTS - The breather gasket, head gasket and valve stem seals all sit in the same job. The valve stem seal is 25-032-14-S. If the engine is using oil rather than leaking it, the stem seals are the more likely cause and the covers are only where you noticed it.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009653338266,"sku":"PI-K609-H32Q","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/41wVoI5aTIL.jpg?v=1793383272"},{"product_id":"two-valve-seals-compatible-with-kohler-ch18-ch20-ch22-ch23-ch25-ch640-pd-bgvn-lf03","title":"Two Valve Seals Compatible with Kohler CH18, CH20, CH22, CH23, CH25, CH640, CH730, CH740 Replaces Part Numbers: 25-032-14-s, 2503214, 25 032 14 S, 25 032 14","description":"\u003cp\u003eTwo Brand New Valve Seals Compatible With Kohler CH18, CH20, CH22, CH23, CH25, CH640, CH730, CH740, CH748, CH750, ECH750, CV18, CV20, CV22, CV23, CV25, CV27, CV640, CV680, CV730, CV742, CV745, CV750, ECV750 Note: These seals are oil and heat resistant and resist swelling Replaces Kohler Part Number: 25-032-14-s, 2503214, 25 032 14 S, 25 032 14 These Valve Seals Are Oil And Heat-resistant And Resist Swelling\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO VALVE STEM SEALS - A pair of valve stem seals replacing Kohler 25-032-14-S, also written 2503214 and 25 032 14 S. Two per order, which covers one cylinder head on a twin. Order two packs if you are doing both heads.\u003c\/li\u003e\n\u003cli\u003eFITS THE KOHLER COMMAND AND COMMAND PRO TWINS - CH18, CH20, CH22, CH23, CH25, CH620 and CH640, together with the vertical shaft CV equivalents and the CV730, CV740 and CV750. Read the model and spec numbers off the blower housing decal.\u003c\/li\u003e\n\u003cli\u003eFIT THEM WHENEVER THE HEAD COMES OFF - A hardened stem seal lets oil down the guide, which shows as smoke on start up and oil consumption with no external leak. They cost very little, they are the part most often reused, and the head is already apart - change them.\u003c\/li\u003e\n\u003cli\u003eCHECK THE GUIDE WHILE YOU ARE THERE - A new seal in a worn guide will not cure oil consumption. Guide inside diameter when new is 7.038 to 7.058mm; replace at 7.134mm on the intake or 7.159mm on the exhaust. Measure the valve stems you intend to reuse as well as the guides.\u003c\/li\u003e\n\u003cli\u003eASSEMBLY NOTES - Fit the seal squarely and do not knock it out of shape getting it over the stem. Lubricate the stem before the valve goes through so the lip is not cut on first assembly. These engines use hydraulic lifters, so there is no lash to set afterwards, but turn the engine over by hand before the first start.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009653567642,"sku":"PD-BGVN-LF03","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/51UXLVl5-KL.jpg?v=1793383274"},{"product_id":"2-pistons-83-75mm-030-over-fits-kohler-ch25-ch730-4m-quz2-5s4v","title":"2 Pistons 83.75mm .030 Over Fits Kohler CH25 CH730","description":"\u003cp\u003eTwo .030 oversize pistons for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder. Each comes with its own ring set, wrist pin and circlips. What the trade calls .030 is the 0.75mm step, so the pistons fit a cylinder bored to 83.75mm; they will not go into a standard 83mm bore, so measure the finished bore before ordering. The rings come matched to the pistons, so there is no need to measure the old ring grooves. Gaskets and seals are not included. They fit the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .030 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO .030 OVERSIZE PISTONS WITH RINGS - Two 83.75mm pistons, each with its own ring set, wrist pin and circlips. One per cylinder, so this does both sides of a twin.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .030 is the 0.75mm step: 0.75mm over the 83.00mm standard bore gives 83.75mm. These will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The pistons come with their own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .030 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor. Gaskets and seals are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009653928090,"sku":"4M-QUZ2-5S4V","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61ejOL-sNAL.jpg?v=1793383282"},{"product_id":"one-valve-cover-oring-compatible-with-kohler-ch18-ch20-ch22-ch25-ch620-xg-8jjj-u0af","title":"One Valve Cover ORing Compatible with Kohler CH18 CH20 CH22 CH25 CH620 CH740 CH750 CH640 CH745 Replaces Part # 24-153-30-S","description":"\u003cp\u003eOne Valve Cover ORing Compatible with Kohler CH18 CH20 CH22 CH25 CH620 CH740 CH750 CH640 CH745 Replaces Part # 24-153-30-S\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePREMIUM GASKET: High-quality rubber gasket designed for superior sealing performance and durability in small engine applications\u003c\/li\u003e\n\u003cli\u003ePRECISE FIT: Custom-shaped design ensures exact fitment for reliable sealing of engine components and prevention of fluid leaks\u003c\/li\u003e\n\u003cli\u003eMATERIAL QUALITY: Constructed from heavy-duty rubber compound that maintains flexibility and integrity under varying temperatures\u003c\/li\u003e\n\u003cli\u003eEASY INSTALLATION: Pre-formed shape allows for straightforward replacement with proper alignment and secure fit\u003c\/li\u003e\n\u003cli\u003eSPECIFICATIONS: Professional-grade rubber gasket with approximately 0.25 inch thickness for optimal compression and sealing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009655828634,"sku":"XG-8JJJ-U0AF","price":8.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/31vMb8rr3uL.jpg?v=1793383364"},{"product_id":"030-over-83-75mm-overhaul-kit-fits-kohler-ch25-ch730-zv-vwgm-izn0","title":".030 Over 83.75mm Overhaul Kit Fits Kohler CH25 CH730","description":"\u003cp\u003eA .030 oversize overhaul kit for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, bored to 83.75mm. The kit contains two 83.75mm pistons with rings, wrist pins and circlips, the complete gasket set (head, valve cover, intake and exhaust gaskets and small O-rings), two crankshaft oil seals and crankcase sealer. Rods, valves and bearings are not included. What the trade calls .030 is the 0.75mm step, so these pistons fit only a cylinder machined to 83.75mm; they will not go into a standard bore. The pistons come with their own rings, so there is no need to measure the old ring grooves. It fits the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .030 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePISTONS, RINGS, GASKETS AND SEALS - Two 83.75mm (.030 oversize) pistons with rings, wrist pins and clips, the complete gasket set with head and valve cover gaskets and small O-rings, two crankshaft seals and crankcase sealer. Rods, valves and bearings are not included.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .030 is the 0.75mm step: 0.75mm over the 83.00mm standard bore gives 83.75mm. These will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .030 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The pistons come with their own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009656811674,"sku":"ZV-VWGM-IZN0","price":289.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71Um9rfG8UL.jpg?v=1793383415"},{"product_id":"kohler-83-50mm-020-over-overhaul-kit-ch25-ch730-cv26-5b-jghm-8h0l","title":"Kohler 83.50mm .020 Over Overhaul Kit CH25 CH730 CV26","description":"\u003cp\u003eOversize overhaul package for the 83mm Kohler twin cylinder engines, supplied at 83.50mm, which is Kohler's +0.50mm oversize and the step commonly called .020 over. This kit is for an engine whose cylinders have already been machined to that oversize. If your block is still at the 83.00mm standard bore, the standard kit is the one you want. Contents: two 83.50mm pistons with matched ring sets, replacing 25 874 17-S on the 725cc engines and 25 874 20-S on the 747cc engines, with rings replacing 25 108 04-S; a complete gasket and seal set replacing 24 755 394-S, which supersedes 24 755 207-S; both crankshaft seals; and a tube of crankcase sealant for the closure plate and oil pan. The pistons and rings arrive as a matched set, so there is no ring style to identify and nothing to measure on the old piston before ordering. Covers Command and Command Pro CH25, CH26, CH730, CH735, CH740, CH745, CH750 and CH752, vertical shaft CV25, CV26, CV730, CV735, CV740, CV745 and CV750, and Courage twins SV710 through SV740 and SV810 through SV840. The liquid cooled LH755 and LH775 are a separate engine family and are not covered. Identify the engine from the model and spec numbers on the blower housing decal rather than by horsepower. Not included: connecting rods, bearings, valves, camshaft or oil pump. Before assembly, check ring end gap in the finished bore and ring side clearance in the piston grooves, and make sure the shop has left a honed finish for the rings to seat against.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTHE .020 OVER KIT - 83.50mm PISTONS - These measure 83.50mm, which is Kohler's +0.50mm step, the one the trade calls .020 over. They are for a block that has already been bored to match, and they will not go into a standard 83.00mm cylinder. If yours is still standard, or has not been measured yet, our standard-bore 83.00mm overhaul kit is the one to order - then keep this page for after the machine shop has finished. Take the old piston with you so the shop can bore to it.\u003c\/li\u003e\n\u003cli\u003eWHAT IS IN THE BOX, WITH THE NUMBERS - Two 83.50mm pistons, each with its own ring set, replacing Kohler 25 874 17-S on the 725cc engines and 25 874 20-S on the 747cc engines. The rings replace 25 108 04-S. Full gasket and seal set replacing 24 755 394-S, which supersedes 24 755 207-S. Both crankshaft seals. One tube of crankcase sealant for the closure plate and oil pan joint. No connecting rods, no bearings, no valves and no camshaft - this is a top end and gasket package.\u003c\/li\u003e\n\u003cli\u003eONE PISTON COVERS BOTH DISPLACEMENTS - Kohler splits the 83mm twins into 725cc and 747cc and lists a different piston for each. The piston in this kit serves both, and we have shipped it for both for years. That means you do not need to work out which displacement you have before ordering. You do need to know the bore, and the bore is the only measurement that matters here.\u003c\/li\u003e\n\u003cli\u003eFITS THE 83MM KOHLER TWINS - Command and Command Pro CH25, CH26, CH730, CH735, CH740, CH745, CH750 and CH752. Vertical shaft CV25, CV26, CV730, CV735, CV740, CV745 and CV750. Courage twins SV710 through SV740 and SV810 through SV840. The liquid cooled LH755 and LH775 are a different engine family and are not covered. Read the model and spec numbers off the blower housing decal rather than going by horsepower, because the same horsepower was sold on more than one block.\u003c\/li\u003e\n\u003cli\u003eWHILE IT IS APART - Check ring end gap in the bore the rings will actually run in, and check side clearance in the piston grooves before anything goes together. Make sure the shop left a honed finish for the rings to seat against. The Command twins run hydraulic lifters, so there is no lash to set on those; the Courage SV twins are mechanical and do need lash set cold. Clean the closure plate and oil pan faces back to bare metal before the sealant goes on, and let it set up before you add oil.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009660055706,"sku":"5B-JGHM-8H0L","price":289.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/714ahsL4iTL.jpg?v=1793383484"},{"product_id":"oil-pan-gasket-kohler-cv25-cv730-cv740-cv680-24-041-66-s-6h-03ki-8x04","title":"Oil Pan Gasket Kohler CV25 CV730 CV740 CV680 24-041-66-S","description":"\u003cp\u003eOil pan and crankcase cover gasket with O-ring for Kohler vertical shaft twin-cylinder engines. Replaces Kohler 24-041-66-S. SUPERSESSION. 24-041-66-S replaces the earlier 24-041-24-S and 24-041-54-S. If your parts diagram shows either of those, this is the current part. FITS. CV18, CV20, CV23, CV25, CV26, CV620, CV640, CV680, CV682, CV730, CV732, and the ECV and PCV equivalents. FIRST - DOES YOUR ENGINE TAKE A GASKET? This is the question your engine's spec number answers, and it is worth asking before you order. Kohler sealed this joint two different ways across these families. Some engines use a die-cut gasket. Others were assembled with RTV silicone sealant and no gasket at all - the service manuals for several of these families say exactly that. How to tell: look your model and spec number up in the Kohler parts lookup and see whether a gasket is listed. Or, if the engine is already apart, look at the flange - cured silicone on a bare machined face means it was built without a gasket. WHY YOU SHOULD NOT SUBSTITUTE ONE FOR THE OTHER. This joint is part of the crankshaft end play stack. A gasket is thicker than a film of sealant, and end play is a measured specification on these engines. Fit what the spec number calls for. TORQUE. 216 inch pounds, 24.4 Nm, in the numbered sequence shown in your engine manual - not around the circle. Clean both faces with a gasket-removing solvent rather than scraping them; a gouged sealing face leaks whatever you put between it. WHILE THE PAN IS OFF Crankshaft oil seal Oil pick-up O-ring Oil pump O-ring and pump screen O-ring Check crankshaft end play with the pan drawn down before final assembly A note on branding: Kohler Engines now trades as Rehlko, so packaging may carry either name.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFITS THE VERTICAL SHAFT KOHLER TWINS - CV18, CV20, CV23, CV25, CV26, CV620, CV640, CV680, CV682, CV730 and CV732, plus the ECV and PCV equivalents. Replaces Kohler 24-041-66-S, which supersedes 24-041-24-S and 24-041-54-S. Supplied with the oil pick-up O-ring.\u003c\/li\u003e\n\u003cli\u003eCHECK WHETHER YOUR ENGINE USES A GASKET AT ALL - Kohler sealed this joint two different ways. Some engines take a die-cut gasket; others were assembled with RTV silicone and no gasket. The service manuals for several of these families say plainly that RTV is used in place of a gasket. Look your model and spec number up before ordering, or look at the joint on teardown - cured silicone on a bare machined flange means no gasket.\u003c\/li\u003e\n\u003cli\u003eWHY IT MATTERS MORE THAN IT LOOKS - That joint carries part of the crankshaft end play stack. Adding a gasket where the factory used a thin film of sealant changes the standoff, and end play is a measured specification on these engines. Use what your spec number calls for rather than what is easiest to buy.\u003c\/li\u003e\n\u003cli\u003eTORQUE IS 216 INCH POUNDS - 24.4 Newton meters, in the numbered sequence in your engine manual rather than working around the circle. Clean both faces properly first. Kohler asks for a gasket-removing solvent rather than scraping, because a gouged sealing face will leak no matter what you put between it.\u003c\/li\u003e\n\u003cli\u003eWHAT ELSE COMES OFF WITH THE PAN - The crankshaft oil seal, the oil pick-up O-ring, the oil pump O-ring and the pump screen O-ring are all disturbed by this job and are all cheap. Check crankshaft end play with the pan drawn down before final assembly. Kohler engines are branded Rehlko now, so packaging may carry either name.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009662087322,"sku":"6H-03KI-8X04","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/51HfXoLxciL.jpg?v=1793383540"},{"product_id":"2-pistons-83-50mm-020-over-fits-kohler-ch25-ch730-rb-v3tl-txmk","title":"2 Pistons 83.50mm .020 Over Fits Kohler CH25 CH730","description":"\u003cp\u003eTwo .020 oversize pistons for the Kohler 83mm twin-cylinder engines, 725cc and 747cc, one per cylinder. Each comes with its own ring set, wrist pin and circlips. What the trade calls .020 is the 0.50mm step, so the pistons fit a cylinder bored to 83.50mm; they will not go into a standard 83mm bore, so measure the finished bore before ordering. The rings come matched to the pistons, so there is no need to measure the old ring grooves. Gaskets and seals are not included. They fit the CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775 once bored .020 over. Before assembly, check piston-to-bore clearance, ring end gap and groove side clearance, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTWO .020 OVERSIZE PISTONS WITH RINGS - Two 83.50mm pistons, each with its own ring set, wrist pin and circlips. One per cylinder, so this does both sides of a twin.\u003c\/li\u003e\n\u003cli\u003eFOR A BORED CYLINDER ONLY - What the trade calls .020 is the 0.50mm step: 0.50mm over the 83.00mm standard bore gives 83.50mm. These will not go into a standard bore. Measure the finished bore, or ask the shop what it cut, before ordering.\u003c\/li\u003e\n\u003cli\u003eNO RING-STYLE CHECK NEEDED - These engines were built with 1.2mm and 1.5mm ring grooves. The pistons come with their own matched rings, so there is nothing to measure on the old ones.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 83MM TWINS BORED .020 - CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750, CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750, KT715, KT725, KT730, KT735, KT740, KT745, SV710 to SV840, LH755 and LH775, 725cc and 747cc.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check the finished bore against the piston for the specified clearance, check ring end gap in the bore and side clearance in the groove, and use a ring compressor. Gaskets and seals are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009662415002,"sku":"RB-V3TL-TXMK","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/71o3rjyMfeL.jpg?v=1793383574"},{"product_id":"two-valve-covers-oring-compatible-with-kohler-ch18-ch20-ch22-ch25-ch62-h6-0fcs-je48","title":"Two Valve Covers ORing Compatible with Kohler CH18 CH20 CH22 CH25 CH620 CH740 CH750 CH640 CH745 Replaces Part # 24-153-30-S","description":"\u003cp\u003eTwo Valve Cover ORings Compatible with Kohler CH18 CH20 CH22 CH25 CH620 CH740 CH750 CH640 CH745 Replaces Part # 24-153-30-S\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePREMIUM GASKET: High-quality rubber gasket designed for superior sealing performance and durability in small engine applications\u003c\/li\u003e\n\u003cli\u003ePRECISE FIT: Custom-shaped design ensures exact fitment for reliable sealing of engine components and prevention of fluid leaks\u003c\/li\u003e\n\u003cli\u003eMATERIAL QUALITY: Constructed from heavy-duty rubber compound that maintains flexibility and integrity under varying temperatures\u003c\/li\u003e\n\u003cli\u003eEASY INSTALLATION: Pre-formed shape allows for straightforward replacement with proper alignment and secure fit\u003c\/li\u003e\n\u003cli\u003eSPECIFICATIONS: Professional-grade rubber gasket with approximately 0.25 inch thickness for optimal compression and sealing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009667297434,"sku":"H6-0FCS-JE48","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/41uVDc5SUbL.jpg?v=1793383642"},{"product_id":"intake-valve-guide-and-seal-compatible-with-kohler-ch18-ch20-ch22-ch23-ff-3fm1-oeep","title":"Intake Valve Guide and Seal Compatible with Kohler CH18, CH20, CH22, CH23, CH25, CH730, CH740 Engines","description":"\u003cp\u003eKeep your engine running smoothly with this precision-engineered intake valve guide and seal set, designed specifically for CH series engines including CH18, CH20, CH22, CH23, CH25, CH730, and CH740 models. This essential component helps maintain proper valve alignment and sealing, ensuring optimal engine performance and longevity. The valve guide controls the valve stem's movement while the seal prevents oil from entering the combustion chamber, maintaining clean and efficient operation. Installation by a qualified technician is recommended to ensure proper fitment and function. This replacement part is manufactured to meet strict dimensional specifications for reliable performance in your engine.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCOMPATIBILITY: Designed to fit multiple engine models including CH18, CH20, CH22, CH23, CH25, CH730, and CH740 series\u003c\/li\u003e\n\u003cli\u003eDUAL COMPONENT: Package includes both valve guide and valve seal for complete intake valve maintenance and repair\u003c\/li\u003e\n\u003cli\u003ePRECISION FIT: Engineered to exact specifications for proper sealing and optimal engine performance\u003c\/li\u003e\n\u003cli\u003eDIRECT REPLACEMENT: Matches OEM specifications for seamless installation and reliable operation\u003c\/li\u003e\n\u003cli\u003eESSENTIAL MAINTENANCE: Helps maintain proper valve operation and prevents oil consumption issues in compatible engines\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009667788954,"sku":"FF-3FM1-OEEP","price":25.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/518Q35PZ43L.jpg?v=1793383698"}],"url":"https:\/\/performancesawsupply.com\/collections\/kohler-83mm-rebuild-center.oembed","provider":"Performance Saw Supply","version":"1.0","type":"link"}