{"product_id":"namura-020-over-bore-piston-rings-for-polaris-1990-1993-350-2-stroke-atv-80-5mm","title":"Namura .020 Over Bore Piston Rings for Polaris 1990-1993 350 2-Stroke ATV 80.5mm","description":"\u003ch2\u003e.020 Over Bore Piston Rings for Polaris\u003c\/h2\u003e\u003cp\u003eThese .020 over bore piston rings for Polaris are designed to provide a proper seal for cylinders bored 80.5mm. The .020 over bore piston rings for Polaris maintain compression and prevent blow-by in 2-stroke engines.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe .020 over bore piston rings for Polaris serve as the sealing interface between the piston and the cylinder wall. These .020 over bore piston rings for Polaris are essential for completing a top-end rebuild after a cylinder has been resized. They are intended for engine builders working on 350cc 2-stroke engines.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHeat-treated steel for durability\u003c\/li\u003e\n\u003cli\u003eOptimized tension for 2-stroke bore size\u003c\/li\u003e\n\u003cli\u003eChrome-plated finish for wear resistance\u003c\/li\u003e\n\u003cli\u003ePrecise end gaps for consistent operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Polaris 350 2-Stroke 1990-1993\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine rebuilds following cylinder boring\u003c\/li\u003e\n\u003cli\u003eRestoring power to a high-hour engine\u003c\/li\u003e\n\u003cli\u003eRepairing low-compression issues\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\u003e80.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 Over\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do these require filing before installation? \u003cstrong\u003eA:\u003c\/strong\u003e Always check ring end gaps in the cylinder before final assembly. \u003cstrong\u003eQ:\u003c\/strong\u003e Will these fit a standard bore? \u003cstrong\u003eA:\u003c\/strong\u003e No, these are specifically sized for an .020 overbore application.\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":44792334057558,"sku":"SZ1F03019","price":37.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_c87c829b-5a0e-45a1-9854-3fefa1023037.jpg?v=1780067574","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-piston-rings-for-polaris-1990-1993-350-2-stroke-atv-80-5mm","provider":"Solid Spare","version":"1.0","type":"link"}