{"product_id":"77-75mm-030-over-piston-with-rings-fits-kohler-ch20-x6-e36b-fa25","title":"77.75mm .030 Over Piston with Rings Fits Kohler CH20","description":"\u003cp\u003eOne 77.75mm .030 oversize piston with its matched ring set, wrist pin and circlips for the Kohler 77mm, 624cc twin-cylinder engines. Gaskets, seals, connecting rods and valves are not included. It fits the CH18, CH20, CH22, CH620, CH621, CH640 and CH641 and the CV18, CV20, CV22, CV620, CV624 and CV640; some CH22, CH620 and CH640 engines are the 80mm, 674cc version, so check the displacement on the nameplate. It is the .030 oversize, for a cylinder bored to 77.75mm; a standard cylinder measures 77.00mm, so measure before ordering. A twin has two cylinders, so order two to do both sides. Before assembly, check ring end gap in the bore and side clearance in the groove, use a ring compressor, and find the cause of any scuffing on the old piston.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eONE PISTON WITH RINGS - One 77.75mm .030 oversize piston with its matched ring set, wrist pin and circlips. Gaskets, seals, connecting rods and valves are not included.\u003c\/li\u003e\n\u003cli\u003eFITS KOHLER 77MM, 624CC TWINS - CH18, CH20, CH22, CH620, CH621, CH640, CH641, CV18, CV20, CV22, CV620, CV624 and CV640. Some CH22, CH620 and CH640 engines are the 80mm, 674cc version, so check the displacement on the nameplate.\u003c\/li\u003e\n\u003cli\u003eFOR A BORE MACHINED TO 77.75mm - This is the .030 oversize. Measure the bore before ordering: a cylinder bored .030 over measures 77.75mm, a standard one 77.00mm.\u003c\/li\u003e\n\u003cli\u003eONE CYLINDER - This is one piston. A twin has two cylinders, so order two to do both sides.\u003c\/li\u003e\n\u003cli\u003eMEASURE BEFORE IT GOES TOGETHER - Check ring end gap in the bore and side clearance in the groove, and use a ring compressor. If the old piston scuffed, find out why, such as an air leak, overheating or low oil, before fitting the new one.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009620734106,"sku":"X6-E36B-FA25","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61UnHmVi1qL_4c5ec31e-dfee-434b-a63b-0242917059f9.jpg?v=1793382933","url":"https:\/\/performancesawsupply.com\/products\/77-75mm-030-over-piston-with-rings-fits-kohler-ch20-x6-e36b-fa25","provider":"Performance Saw Supply","version":"1.0","type":"link"}