{"product_id":"namura-060-over-bore-piston-kit-fits-polaris-850-scrambler-sportsman-88-5mm","title":"Namura .060 Over Bore Piston Kit fits Polaris 850 Scrambler \u0026 Sportsman 88.5mm","description":"\u003ch2\u003e.060 Over Bore Piston Kit (88.5mm) for Polaris\u003c\/h2\u003e\u003cp\u003eThis .060 over bore piston kit replaces the original piston in Polaris 850 Scrambler and Sportsman models, providing a direct fit with an 88.5mm diameter for increased displacement and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura .060 over bore piston kit is designed for Polaris 850 Scrambler and Sportsman ATVs, offering a reliable replacement that boosts engine displacement. The 88.5mm piston kit is ideal for rebuilding or restoring the Polaris 850 engine, ensuring smooth operation and long-lasting durability.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined aluminum alloy construction for reduced weight and high strength\u003c\/li\u003e\n\u003cli\u003eOversized 88.5mm bore increases engine displacement for added power\u003c\/li\u003e\n\u003cli\u003eIncludes rings, wrist pin, and circlips for a complete installation\u003c\/li\u003e\n\u003cli\u003eDesigned to factory specifications for a direct fit without modification\u003c\/li\u003e\n\u003cli\u003eHeat-treated skirt coating minimizes friction and wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris Scrambler 850\u003c\/li\u003e\n\u003cli\u003efor Polaris Sportsman 850\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine rebuilds for Polaris 850 ATVs used in trail riding and utility work\u003c\/li\u003e\n\u003cli\u003eIncreasing displacement for improved power output\u003c\/li\u003e\n\u003cli\u003eReplacement after top-end failure or high-mileage maintenance\u003c\/li\u003e\n\u003cli\u003eOff-road racing and recreational riding applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura .060 Over Bore Piston Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e88.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.060 inch (1.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Engine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolaris 850\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 Do I need to re-tune my carburetor or ECU after installing this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e An over-bore piston kit changes engine displacement, so adjusting fuel delivery is recommended to maintain proper air-fuel ratio; consult the service manual or a professional tuner.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I use this piston kit with the existing cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, the .060 over bore requires the cylinder to be bored to the matching 88.5mm diameter by a qualified machine shop before installation.\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":44949739700310,"sku":"SZ1F13702","price":175.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_bc6ec29a-54d9-4826-be81-f87671c66652.jpg?v=1781397550","url":"https:\/\/www.solidspare.com\/products\/namura-060-over-bore-piston-kit-fits-polaris-850-scrambler-sportsman-88-5mm","provider":"Solid Spare","version":"1.0","type":"link"}