{"product_id":"namura-standard-bore-piston-kit-fits-polaris-400-450-sportsman-ranger-400-87-9mm","title":"Namura Standard Bore Piston Kit fits Polaris 400 450 Sportsman Ranger 400 87.9mm","description":"\u003ch2\u003eStandard Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis standard bore piston kit for Polaris 400, 450 Sportsman and Ranger 400 models is a direct replacement component designed to restore engine performance without cylinder boring.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis standard bore piston kit for Polaris ATV and UTV models provides a precise 87.9mm piston for engines requiring a factory-size rebuild. It is ideal for riders refreshing their Polaris Sportsman or Ranger engine with OEM-spec components. The kit includes piston, rings, and wrist pin for a complete top-end overhaul.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy for durability\u003c\/li\u003e\n\u003cli\u003eIncludes chrome-plated rings for reduced friction and long life\u003c\/li\u003e\n\u003cli\u003eDesigned to match OEM specifications for a direct fit\u003c\/li\u003e\n\u003cli\u003eStandard bore size eliminates need for cylinder boring\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and clips for a complete install\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris Sportsman 400\u003c\/li\u003e\n\u003cli\u003efor Polaris Sportsman 450\u003c\/li\u003e\n\u003cli\u003efor Polaris Ranger 400\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding and recreational off-road use\u003c\/li\u003e\n\u003cli\u003eWork applications like hauling and towing on farms\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds for worn-out top ends\u003c\/li\u003e\n\u003cli\u003eRestoration projects for older Polaris models\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\u003e87.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard (0.000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, Rings, Wrist Pin, Clips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura\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 Does this piston kit require cylinder boring? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a standard bore piston at 87.9mm designed for a stock cylinder. It should be installed in a cylinder that is within factory wear limits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is included in the kit? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes the piston, rings, wrist pin, and circlips. You may need to reuse your original piston pin or purchase separately if not included.\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":44890824933462,"sku":"SZ1F13433","price":170.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_8c55356c-5019-415f-a57f-da5befd383b5.jpg?v=1781144115","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-kit-fits-polaris-400-450-sportsman-ranger-400-87-9mm","provider":"Solid Spare","version":"1.0","type":"link"}