{"product_id":"namura-size-a-standard-bore-top-end-repair-kit-for-yamaha-yz250-2002-2024-66-4mm","title":"Namura Size A Standard Bore Top End Repair Kit for Yamaha YZ250 2002-2024 66.4mm","description":"\u003ch2\u003eSize A Standard Bore Top End Repair Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis top end repair kit for Yamaha YZ250 provides all necessary components to restore engine performance by rebuilding the cylinder head assembly with a 66.4mm standard bore piston.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis top end repair kit for Yamaha YZ250 includes a precision-machined piston, rings, wrist pin, and circlips designed for 2002-2024 models. It is the ideal solution for restoring compression and power in your Yamaha YZ250's top end. The kit's quality ensures reliable operation and extended engine life.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined piston from high-silicone aluminum alloy\u003c\/li\u003e\n\u003cli\u003eChrome-plated compression ring for reduced friction\u003c\/li\u003e\n\u003cli\u003eNitrided wrist pin for increased strength\u003c\/li\u003e\n\u003cli\u003eIncludes circlips and pin bearing for complete installation\u003c\/li\u003e\n\u003cli\u003eSize A grade ensures proper fit within factory tolerances\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 and enduro racing requiring reliable top end performance\u003c\/li\u003e\n\u003cli\u003eTrail riding and recreational off-road use\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds to restore lost compression\u003c\/li\u003e\n\u003cli\u003ePre-season maintenance for competitive riders\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 Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSize A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ250 2002-2024\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 Is this kit suitable for both Size A and Size B bores? \u003cstrong\u003eA:\u003c\/strong\u003e No, Size A is matched specifically to standard bore cylinders within the A tolerance range; use Size B for cylinders requiring the B piston grade.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the kit include all gaskets and seals? \u003cstrong\u003eA:\u003c\/strong\u003e This top end repair kit includes the piston, rings, wrist pin, and circlips; base gaskets and head gaskets should be ordered separately.\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":44949748777046,"sku":"SZ1F13988","price":191.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f99a6b3b-7997-4c53-9cfd-c63d77e9e664.jpg?v=1781397909","url":"https:\/\/www.solidspare.com\/products\/namura-size-a-standard-bore-top-end-repair-kit-for-yamaha-yz250-2002-2024-66-4mm","provider":"Solid Spare","version":"1.0","type":"link"}