{"product_id":"namura-standard-bore-piston-kit-for-polaris-trail-boss-250-fits-1985-1999-72mm","title":"Namura Standard Bore Piston Kit for Polaris Trail Boss 250 fits 1985-1999 72mm","description":"\u003ch2\u003eNamura Standard Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis standard bore piston kit replaces the original piston in Polaris Trail Boss 250 ATVs from 1985 to 1999, using a 72mm bore diameter to maintain factory specifications.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe standard bore piston kit for Polaris Trail Boss 250 is a direct replacement for engines that do not require oversize pistons. This 72mm piston kit restores compression and performance in 1985-1999 models.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eManufactured from high-silicon aluminum alloy for durability and heat resistance\u003c\/li\u003e\n\u003cli\u003ePrecision ground piston skirt ensures proper cylinder wall contact\u003c\/li\u003e\n\u003cli\u003eIncludes piston pin and retaining clips for complete installation\u003c\/li\u003e\n\u003cli\u003eStandard 72mm bore size matches original factory dimensions\u003c\/li\u003e\n\u003cli\u003eDesigned for Polaris Trail Boss 250 engines\u003c\/li\u003e\n\u003cli\u003eRings included for immediate use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Polaris Trail Boss 250 (1985-1999)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestores lost compression in high-mileage Trail Boss engines\u003c\/li\u003e\n\u003cli\u003eIdeal for engine rebuilds after cylinder scoring or ring failure\u003c\/li\u003e\n\u003cli\u003eCommonly used during full top-end overhauls on Polaris ATVs\u003c\/li\u003e\n\u003cli\u003eProvides reliable power for trail riding and utility use\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\u003e72mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolaris Trail Boss 250 (1985-1999)\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-use my old piston pin? \u003cstrong\u003eA:\u003c\/strong\u003e It is recommended to use the included pin and clips for proper fit. Always follow your engine manual for assembly torque specs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is any special preparation required for the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e The cylinder should be honed to the correct finish for a 72mm standard piston. Check ring end gap during assembly.\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":44890489684054,"sku":"SZ1F11837","price":136.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_5d4d2ec2-c018-498e-ae7c-815aba24bc33.jpg?v=1781140582","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-kit-for-polaris-trail-boss-250-fits-1985-1999-72mm","provider":"Solid Spare","version":"1.0","type":"link"}