{"product_id":"namura-size-c-standard-bore-top-end-repair-kit-for-yamaha-yz250-2002-2024-66-4mm","title":"Namura Size C Standard Bore Top End Repair Kit for Yamaha YZ250 2002-2024 66.4mm","description":"\u003ch2\u003eSize C Standard Bore Top End Repair Kit for Yamaha YZ250\u003c\/h2\u003e\u003cp\u003eThis top end repair kit includes a piston, rings, and gaskets for rebuilding the cylinder on a Yamaha YZ250 with a 66.4mm bore.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Size C Standard Bore Top End Repair Kit is a complete set of components to refresh the upper cylinder on a Yamaha YZ250 from 2002 to 2024. The kit contains a 66.4mm piston, rings, wrist pin, and gaskets to restore compression and performance. Designed for off-road racing, this top end repair kit delivers reliable power and durability.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e66.4mm bore piston matched to cylinder tolerance\u003c\/li\u003e\n\u003cli\u003eHigh-strength rings for consistent seal\u003c\/li\u003e\n\u003cli\u003eIncludes head gasket, base gasket, and exhaust gasket\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wrist pin with circlips\u003c\/li\u003e\n\u003cli\u003eTested for wear resistance in high-RPM environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ250 2002-2024\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross racing and trail riding on Yamaha YZ250\u003c\/li\u003e\n\u003cli\u003eRebuilding top end after wear or piston failure\u003c\/li\u003e\n\u003cli\u003eCompetition and recreational off-road use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop End Repair Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit include the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this top end repair kit includes only the piston assembly and gaskets; the cylinder must be inspected and reused or replaced separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I use this kit for a 2001 model? \u003cstrong\u003eA:\u003c\/strong\u003e This kit is specifically for 2002-2024 Yamaha YZ250 models; earlier years may have different cylinder dimensions.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44949748744278,"sku":"SZ1F13987","price":191.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_dbde8875-67b0-4a93-ab6d-72d8e9c78c06.jpg?v=1781397907","url":"https:\/\/www.solidspare.com\/products\/namura-size-c-standard-bore-top-end-repair-kit-for-yamaha-yz250-2002-2024-66-4mm","provider":"Solid Spare","version":"1.0","type":"link"}