{"product_id":"namura-standard-bore-top-end-rebuild-kit-size-c-for-yamaha-yz250f-2014-2018-77mm","title":"Namura Standard Bore Top End Rebuild Kit Size C for Yamaha YZ250F 2014-2018 77mm","description":"\u003ch2\u003eNamura Standard Bore Top End Rebuild Kit Size C for Yamaha\u003c\/h2\u003e\u003cp\u003eThis Namura standard bore top end rebuild kit size C is a complete replacement piston, rings, wrist pin, and gaskets for Yamaha YZ250F models from 2014 to 2018, featuring a 77mm bore to restore engine compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis top end rebuild kit includes everything needed to refresh the cylinder assembly on your Yamaha YZ250F. Designed as a direct-fit replacement with a 77mm standard bore size, it restores compression and extends engine life for riders and mechanics. The kit is a cost-effective alternative to OEM parts, providing reliable performance for off-road and motocross use.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes piston, rings, wrist pin, circlips, and full gasket set\u003c\/li\u003e\n\u003cli\u003e77mm standard bore maintains factory compression ratio\u003c\/li\u003e\n\u003cli\u003eHigh-strength aluminum alloy piston for durability\u003c\/li\u003e\n\u003cli\u003ePrecision-ground rings ensure proper seal\u003c\/li\u003e\n\u003cli\u003eComplete set eliminates need for separate gasket orders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ250F 2014\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ250F 2015\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ250F 2016\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ250F 2017\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ250F 2018\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop end rebuild for motocross racing\u003c\/li\u003e\n\u003cli\u003eTrail riding maintenance\u003c\/li\u003e\n\u003cli\u003eEngine refresh after high hours\u003c\/li\u003e\n\u003cli\u003eCompetition engine preparation\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 Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e77mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ250F 2014-2018\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 a cylinder gasket? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit includes a full gasket set covering head, base, and exhaust gaskets for a complete rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I use this kit with a stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the 77mm standard bore is designed for stock cylinders that are within wear limits; if the cylinder is worn, it may need reconditioning.\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":44949894791254,"sku":"SZ1F16005","price":351.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_5f22968a-9871-401a-a1cc-6eb78c04ae44.jpg?v=1781401036","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-top-end-rebuild-kit-size-c-for-yamaha-yz250f-2014-2018-77mm","provider":"Solid Spare","version":"1.0","type":"link"}