{"product_id":"spi-040-over-bore-piston-kit-for-polaris-500-rmk-fits-1997-1998-1999-73mm","title":"SPI .040 Over Bore Piston Kit for Polaris 500 RMK fits 1997 1998 1999 73mm","description":"\u003ch2\u003eSPI .040 Over Bore Piston Kit for Polaris 500 RMK\u003c\/h2\u003e\u003cp\u003eThis SPI .040 over bore piston kit replaces the original piston in Polaris 500 RMK snowmobiles with a 73mm bore, restoring compression and performance after a top end rebuild.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe SPI .040 over bore piston kit is designed for Polaris 500 RMK models from 1997 to 1999, providing a high-quality replacement that brings the engine back to life. Featuring a 73mm bore size, this piston kit is a direct fit for the 500cc engine, ensuring reliable operation on the mountain.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision machined 73mm piston with .040 oversize\u003c\/li\u003e\n\u003cli\u003eHigh-strength aluminum alloy construction for durability\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings and wrist pin for complete installation\u003c\/li\u003e\n\u003cli\u003eEngineered to match OEM specifications for reliable fitment\u003c\/li\u003e\n\u003cli\u003eTested for consistent compression and smooth operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Polaris 500 RMK (1997-1999)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCommonly used during top-end rebuilds on Polaris mountain snowmobiles\u003c\/li\u003e\n\u003cli\u003eIdeal for restoring power in high-mileage RMK engines\u003c\/li\u003e\n\u003cli\u003eSuitable for deep snow and backcountry riding\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\u003e73mm\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.040 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment\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 Do I need to replace the cylinder as well? \u003cstrong\u003eA:\u003c\/strong\u003e Typically, a .040 over bore piston matches a freshly honed cylinder; if the cylinder is worn beyond spec, boring may be required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What other parts should I replace with this piston? \u003cstrong\u003eA:\u003c\/strong\u003e It is recommended to install a new gasket set and check the wrist pin bearing for wear during a top-end 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":44890799210582,"sku":"SZ1F13234","price":164.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_96a1f1fd-64da-4f2a-b626-7169567683cc.jpg?v=1781143852","url":"https:\/\/www.solidspare.com\/products\/spi-040-over-bore-piston-kit-for-polaris-500-rmk-fits-1997-1998-1999-73mm","provider":"Solid Spare","version":"1.0","type":"link"}