{"product_id":"namura-060-over-bore-piston-rings-for-polaris-big-boss-250-1989-1993-73-5mm","title":"Namura .060 Over Bore Piston Rings for Polaris Big Boss 250  1989-1993 73.5mm","description":"\u003ch2\u003e.060 Over Bore Piston Rings for for Namura\u003c\/h2\u003e\u003cp\u003eThese .060 over bore piston rings for for Namura seal the 73.5mm bores in Polaris Big Boss 250 engines during top end maintenance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe .060 over bore piston rings for for Namura provide the essential seal required to regain power in machined cylinder blocks. By using .060 over bore piston rings for for Namura, engine builders achieve reliable compression levels after bore refurbishment. These .060 over bore piston rings for for Namura are built for demanding environments where performance is required.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision fit for 73.5mm bore\u003c\/li\u003e\n\u003cli\u003eDurable long-wear composition\u003c\/li\u003e\n\u003cli\u003eMaintains critical ring seal\u003c\/li\u003e\n\u003cli\u003eOptimized tension for two-stroke operation\u003c\/li\u003e\n\u003cli\u003eEngineered for thermal expansion\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Polaris Big Boss 250 1989-1993\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-hour engine maintenance\u003c\/li\u003e\n\u003cli\u003eRestoring compression to oversized cylinders\u003c\/li\u003e\n\u003cli\u003eEssential component for top-end rebuilds\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\u003e73.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.060\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 Can these work on stock 72mm bores? \u003cstrong\u003eA:\u003c\/strong\u003e No, these will not seal correctly on non-machined cylinders.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I ensure proper seating? \u003cstrong\u003eA:\u003c\/strong\u003e Follow a standard break-in procedure after installation.\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":44792299356246,"sku":"SZ1F02420","price":32.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_959e07b0-8d2e-4a4d-b542-919dea4ade18.jpg?v=1780066704","url":"https:\/\/www.solidspare.com\/products\/namura-060-over-bore-piston-rings-for-polaris-big-boss-250-1989-1993-73-5mm","provider":"Solid Spare","version":"1.0","type":"link"}