{"product_id":"namura-020-over-bore-top-end-kit-for-polaris-sportsman-850-scrambler-850-87-5mm","title":"Namura .020 Over Bore Top End Kit for Polaris Sportsman 850 Scrambler 850 87.5mm","description":"\u003ch2\u003eNamura .020 Over Bore Top End Kit 87.5mm for Polaris\u003c\/h2\u003e\u003cp\u003eThis top end kit delivers a precision .020 over bore piston and cylinder assembly for Polaris Sportsman 850 and Scrambler 850 engines.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .020 over bore top end kit provides a direct replacement cylinder and piston set designed to restore power and performance in high-mileage or worn Polaris Sportsman 850 and Scrambler 850 ATVs. This top end kit includes everything needed for a complete top end rebuild, ensuring reliable operation and extended engine life. The .020 over bore top end kit is a popular choice for riders seeking a cost-effective rebuild without sacrificing quality.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMachined from high-strength aluminum alloy for durability and heat dissipation\u003c\/li\u003e\n\u003cli\u003ePrecision-honed cylinder bore ensures proper ring seal and compression\u003c\/li\u003e\n\u003cli\u003eIncludes forged piston, piston rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003e.020 over bore size increases displacement slightly for added torque\u003c\/li\u003e\n\u003cli\u003eDirect fit design reduces installation time and complexity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris Sportsman 850\u003c\/li\u003e\n\u003cli\u003efor Polaris Scrambler 850\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding and recreational off-road use\u003c\/li\u003e\n\u003cli\u003eUtility work requiring consistent engine performance\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds after high mileage or scoring\u003c\/li\u003e\n\u003cli\u003eCompetitive and sport 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\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e87.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Bore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 (0.020 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, rings, wrist pin, circlips, cylinder\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 top end kit compatible with both the Sportsman 850 and Scrambler 850? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this Namura .020 over bore top end kit is designed to fit both Polaris Sportsman 850 and Scrambler 850 models with the same engine platform.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to replace the cylinder head gasket separately? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes the cylinder and piston assembly, but you should order a separate head gasket and base gasket for a complete rebuild.\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":44949973074006,"sku":"SZ1F16453","price":461.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_93dd1b3c-17cf-4d7d-88c5-a1851c236d92.jpg?v=1781401627","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-top-end-kit-for-polaris-sportsman-850-scrambler-850-87-5mm","provider":"Solid Spare","version":"1.0","type":"link"}