{"product_id":"namura-standard-bore-piston-rings-for-polaris-sportsman-450-400-ranger-87-9mm","title":"Namura Standard Bore Piston Rings for Polaris Sportsman 450 400 Ranger 87.9mm","description":"\u003ch2\u003eStandard Bore Piston Rings for Polaris\u003c\/h2\u003e\u003cp\u003eThese standard bore piston rings for Polaris are replacement compression and oil control rings designed for an 87.9mm bore, fitting Sportsman 450, 400, and Ranger models.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe standard bore piston rings for Polaris restore proper cylinder compression for engine efficiency and reduced oil consumption. Technicians choose these standard bore piston rings for Polaris to maintain power during routine engine service. Each set of standard bore piston rings for Polaris is engineered for durability under high load conditions.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision machined ring faces\u003c\/li\u003e\n\u003cli\u003eHeat treated for increased longevity\u003c\/li\u003e\n\u003cli\u003eOptimal sealing against cylinder walls\u003c\/li\u003e\n\u003cli\u003eConsistent tension across the stroke\u003c\/li\u003e\n\u003cli\u003eCompatible with standard bore sleeves\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris Sportsman 450\u003c\/li\u003e\n\u003cli\u003efor Polaris Sportsman 400\u003c\/li\u003e\n\u003cli\u003efor Polaris Ranger\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding an engine with low compression\u003c\/li\u003e\n\u003cli\u003eRepairing excessive engine oil burning\u003c\/li\u003e\n\u003cli\u003eStandard maintenance for high hour engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e87.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do these rings require a cylinder hone? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, a fresh crosshatch pattern on the cylinder wall is necessary to help the new rings seat correctly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I check the ring end gap? \u003cstrong\u003eA:\u003c\/strong\u003e Place the ring in the cylinder and use a feeler gauge to measure the gap, ensuring it meets the manufacturer specifications.\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":44792385830998,"sku":"SZ1F03895","price":41.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_80ab5e3e-1494-45a0-86e1-29862d340706.jpg?v=1780068825","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-rings-for-polaris-sportsman-450-400-ranger-87-9mm","provider":"Solid Spare","version":"1.0","type":"link"}