{"product_id":"namura-040-over-bore-piston-kit-for-polaris-300-xplorer-xpress-big-boss-75-5mm","title":"Namura .040 Over Bore Piston Kit for Polaris 300 Xplorer Xpress Big Boss 75.5mm","description":"\u003ch2\u003e.040 Over Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis .040 over bore piston kit, manufactured by Namura, is designed to fit Polaris 300 Xplorer, Xpress, and Big Boss ATVs, offering a reliable replacement with a 75.5mm bore size.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .040 over bore piston kit is a high-quality aftermarket component for Polaris 300 models. It provides a cost-effective solution to restore engine performance after cylinder wear. The kit includes piston, rings, and wrist pin for a complete rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision machined from high-silicone aluminum alloy for durability\u003c\/li\u003e\n\u003cli\u003e.040 over bore increases displacement for improved power\u003c\/li\u003e\n\u003cli\u003ePlasma-moly rings reduce friction and enhance sealing\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and circlips for easy installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris 300 Xplorer\u003c\/li\u003e\n\u003cli\u003efor Polaris 300 Xpress\u003c\/li\u003e\n\u003cli\u003efor Polaris Big Boss\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eATV trail riding and utility work\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds and top-end overhauls\u003c\/li\u003e\n\u003cli\u003eRestoring compression on high-mileage 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\u003e75.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverbore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.040\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 kit include rings? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit includes piston rings and wrist pin for a complete installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this compatible with stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e The cylinder must be bored to 75.5mm to accommodate this .040 over piston kit.\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":44890791673942,"sku":"SZ1F13176","price":164.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_e837f1d1-f9df-4bb1-b0c0-c6216a1d533a.jpg?v=1781143771","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-kit-for-polaris-300-xplorer-xpress-big-boss-75-5mm","provider":"Solid Spare","version":"1.0","type":"link"}