{"product_id":"namura-040-over-bore-piston-bearing-gasket-kit-for-yamaha-yz85-2002-2018-48-5mm","title":"Namura .040 Over Bore Piston Bearing Gasket Kit for Yamaha YZ85 2002-2018 48.5mm","description":"\u003ch2\u003eNamura .040 Over Bore Piston Bearing Gasket Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis piston and gasket kit replaces the original top end components for Yamaha YZ85 motorcycles from 2002 to 2018, delivering reliable power and a precise fit with its .040 over bore size of 48.5mm.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura .040 over bore piston bearing and gasket kit is designed for Yamaha YZ85 models from 2002 to 2018, providing a complete top-end rebuild solution. It includes a forged piston, rings, pin, bearings, and all necessary gaskets to restore compression and performance. The 48.5mm bore size matches the .040 oversize specification for a snug fit in a refurbished cylinder.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged aluminum piston for high-strength and durability\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wrist pin and bearing reduce friction\u003c\/li\u003e\n\u003cli\u003eComplete gasket set seals combustion chamber effectively\u003c\/li\u003e\n\u003cli\u003e.040 over bore compensates for cylinder wear and extends engine life\u003c\/li\u003e\n\u003cli\u003eIncludes rings pre-gapped for quick installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ85 (2002-2018)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIdeal for rebuilding the top end of Yamaha YZ85 engines after wear or damage\u003c\/li\u003e\n\u003cli\u003eSuitable for motocross racing and trail riding applications\u003c\/li\u003e\n\u003cli\u003eCommonly used during engine overhauls to restore performance\u003c\/li\u003e\n\u003cli\u003eInstalled when upgrading to an overbore size for increased displacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.040 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ85 (2002-2018)\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 Is this kit compatible with other Yamaha models? \u003cstrong\u003eA:\u003c\/strong\u003e This kit is specifically designed for the Yamaha YZ85 from 2002 to 2018; other models may require different piston sizes or configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to re-bore the cylinder for this piston? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the .040 over bore piston requires the cylinder to be bored to 48.5mm to ensure proper clearance and ring seal.\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":44890494730326,"sku":"SZ1F11958","price":138.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_de8caa8b-280e-4683-b619-f6829a33ba60.jpg?v=1781140746","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-bearing-gasket-kit-for-yamaha-yz85-2002-2018-48-5mm","provider":"Solid Spare","version":"1.0","type":"link"}