{"product_id":"spi-010-over-bore-piston-kit-for-polaris-550-fan-cooled-1999-2021-73-25mm","title":"SPI .010 Over Bore Piston Kit for Polaris 550 Fan Cooled 1999-2021 - 73.25mm","description":"\u003ch2\u003eSPI .010 Over Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis SPI .010 over bore piston kit is engineered for Polaris 550 fan-cooled engines from 1999 to 2021, delivering a precise 73.25mm bore for engine rebuilding.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis SPI .010 over bore piston kit provides a high-quality replacement for Polaris 550 fan-cooled engines. The kit includes a 73.25mm piston, rings, and wrist pin for a complete top-end rebuild. It is an ideal solution for restoring compression and performance in your Polaris engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e73.25mm bore size for .010 inch overbore application\u003c\/li\u003e\n\u003cli\u003eHigh-strength aluminum alloy for durability and heat management\u003c\/li\u003e\n\u003cli\u003eIncludes precision-ground piston rings for proper sealing\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and circlips for complete assembly\u003c\/li\u003e\n\u003cli\u003eDesigned to match OEM specifications for direct fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Polaris 550 Fan Cooled (1999-2021)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine top-end rebuilds on Polaris snowmobiles and utility vehicles\u003c\/li\u003e\n\u003cli\u003eRestoring lost compression due to normal wear\u003c\/li\u003e\n\u003cli\u003ePerformance rebuilding for improved throttle response\u003c\/li\u003e\n\u003cli\u003eReplacement after piston scuffing or seizure\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\u003e73.25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverbore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.010 inch\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 550 Fan Cooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1999-2021\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 Does this piston kit include rings and wrist pin? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit comes with the piston, rings, wrist pin, and circlips for a complete top-end set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this .010 over piston be used on standard bore engines? \u003cstrong\u003eA:\u003c\/strong\u003e No, it requires the cylinder to be bored to 73.25mm; it is not a drop-in replacement for a standard bore.\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":44890477035606,"sku":"SZ1F11495","price":131.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_7fe2d84a-baf1-4aa5-a935-ad57ec028336.jpg?v=1781140141","url":"https:\/\/www.solidspare.com\/products\/spi-010-over-bore-piston-kit-for-polaris-550-fan-cooled-1999-2021-73-25mm","provider":"Solid Spare","version":"1.0","type":"link"}