{"product_id":"namura-020-over-bore-piston-rings-for-polaris-1990-1993-350-2-stroke-atv-s-81mm","title":"Namura .020 Over Bore Piston Rings for Polaris 1990-1993 350 2-Stroke ATV's 81mm","description":"\u003ch2\u003e.020 Over Bore Piston Rings for Polaris\u003c\/h2\u003e\u003cp\u003eThese .020 Over Bore Piston Rings for Polaris facilitate correct cylinder pressure in a rebuilt engine by providing a tight seal between the piston and wall. The .020 Over Bore Piston Rings for Polaris are sized at 81mm to work with specific over-bored cylinders.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe .020 Over Bore Piston Rings for Polaris are critical for restoring power in 2-stroke engines that have undergone cylinder boring. Using these .020 Over Bore Piston Rings for Polaris ensures that oil consumption remains controlled and compression is maximized. Technicians trust these .020 Over Bore Piston Rings for Polaris for long-term engine reliability.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-grade alloy for heat resistance\u003c\/li\u003e\n\u003cli\u003ePrecision tension for optimal wall contact\u003c\/li\u003e\n\u003cli\u003eDesigned for 2-stroke engine lubrication patterns\u003c\/li\u003e\n\u003cli\u003eCorrect sizing for .020 over-bored cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris 350 2-Stroke 1990\u003c\/li\u003e\n\u003cli\u003efor Polaris 350 2-Stroke 1991\u003c\/li\u003e\n\u003cli\u003efor Polaris 350 2-Stroke 1992\u003c\/li\u003e\n\u003cli\u003efor Polaris 350 2-Stroke 1993\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine top-end overhauls\u003c\/li\u003e\n\u003cli\u003eRepairing scored cylinder walls via over-boring\u003c\/li\u003e\n\u003cli\u003eRestoring compression on aging 2-stroke engines\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\u003e81mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020\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 gap these rings? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, always verify end-gap measurements in your cylinder before final assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will these work in a stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, these are oversized and intended for cylinders that have been machined to .020 over standard.\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":44792331468886,"sku":"SZ1F02993","price":37.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_bf2823e6-7977-4ee0-9a09-f6342f77926d.jpg?v=1780067540","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-piston-rings-for-polaris-1990-1993-350-2-stroke-atv-s-81mm","provider":"Solid Spare","version":"1.0","type":"link"}