{"product_id":"namura-size-a-standard-bore-66-35mm-piston-kit-for-yamaha-yz250-1999-2024-66-4mm","title":"Namura Size A Standard Bore 66.35mm Piston Kit for Yamaha YZ250 1999-2024 66.4mm","description":"\u003ch2\u003eSize A Standard Bore 66.35mm Piston Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis piston kit for Yamaha YZ250 is designed for standard bore applications with a 66.35mm piston diameter, intended for a 66.4mm cylinder bore. It fits YZ250 models from 1999 to 2024, providing a direct replacement for worn pistons.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis piston kit for Yamaha YZ250 includes a precision-ground piston, rings, wrist pin, and circlips for a complete top end refresh. Ideal for YZ250 owners needing a standard bore piston, this kit restores compression and performance. Use this piston kit to maintain your YZ250's engine reliability.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined 66.35mm piston for tight fit\u003c\/li\u003e\n\u003cli\u003eHigh-quality piston rings reduce blow-by\u003c\/li\u003e\n\u003cli\u003eHardened wrist pin for durability\u003c\/li\u003e\n\u003cli\u003eIncludes circlips for secure pin retention\u003c\/li\u003e\n\u003cli\u003eManufactured to OEM specifications for reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ250 (1999-2024)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross engine rebuilds\u003c\/li\u003e\n\u003cli\u003eTrail riding piston replacement\u003c\/li\u003e\n\u003cli\u003eEnduro competition maintenance\u003c\/li\u003e\n\u003cli\u003eGeneral dirt bike top end service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66.35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\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\u003ePiston Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA (Standard)\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 YZ250\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 Will this piston kit fit a 2003 YZ250? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it fits YZ250 models from 1999 to 2024, including the 2003 model year, provided the cylinder bore is standard 66.4mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the kit include wrist pin bearings? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes the wrist pin and circlips, but wrist pin bearings are typically reused or purchased separately if needed.\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":44890494500950,"sku":"SZ1F11952","price":138.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_91a187fd-1fbe-44e0-88e6-c5e889d9e30f.jpg?v=1781140738","url":"https:\/\/www.solidspare.com\/products\/namura-size-a-standard-bore-66-35mm-piston-kit-for-yamaha-yz250-1999-2024-66-4mm","provider":"Solid Spare","version":"1.0","type":"link"}