{"product_id":"spi-020-over-bore-piston-kit-for-polaris-500-rmk-fits-1997-1998-1999-72-5mm","title":"SPI .020 Over Bore Piston Kit for Polaris 500 RMK fits 1997 1998 1999 72.5mm","description":"\u003ch2\u003eSPI .020 Over Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis SPI .020 over bore piston kit is designed for Polaris 500 RMK snowmobiles from 1997 to 1999, featuring a 72.5mm bore for increased displacement and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis piston kit from SPI provides a .020 over bore option for Polaris 500 RMK engines, allowing engine rebuilds with a larger bore. It includes piston, rings, and wrist pin for a complete top-end refresh.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecisely machined from high-strength aluminum alloy\u003c\/li\u003e\n\u003cli\u003e.020 over bore increases displacement for more power\u003c\/li\u003e\n\u003cli\u003eIncludes high-quality piston rings for proper sealing\u003c\/li\u003e\n\u003cli\u003eDesigned to withstand high RPM and load conditions\u003c\/li\u003e\n\u003cli\u003eDirect fit for Polaris 500 RMK with 72.5mm bore\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris 500 RMK (1997)\u003c\/li\u003e\n\u003cli\u003efor Polaris 500 RMK (1998)\u003c\/li\u003e\n\u003cli\u003efor Polaris 500 RMK (1999)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSnowmobile trail riding and racing\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds and performance upgrades\u003c\/li\u003e\n\u003cli\u003eHigh-altitude riding requiring increased compression\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\u003e72.5mm\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 inch\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 500 RMK 1997-1999\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 Is this piston kit compatible with stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, when boring the cylinder to 72.5mm, this kit can be used with the stock cylinder after machining.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to replace wrist pin bearings? \u003cstrong\u003eA:\u003c\/strong\u003e This kit includes a new wrist pin and circlips; it is recommended to also replace the connecting rod bearing during 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":44890799112278,"sku":"SZ1F13232","price":164.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_35856a82-19fd-47f6-a805-dc2c65f7fd17.jpg?v=1781143849","url":"https:\/\/www.solidspare.com\/products\/spi-020-over-bore-piston-kit-for-polaris-500-rmk-fits-1997-1998-1999-72-5mm","provider":"Solid Spare","version":"1.0","type":"link"}