{"product_id":"namura-040-over-bore-piston-kit-for-kawasaki-prairie-650-brute-force-650-81mm","title":"Namura .040 Over Bore Piston Kit for Kawasaki Prairie 650 \u0026 Brute Force 650 81mm","description":"\u003ch2\u003e.040 Over Bore Piston Kit for Kawasaki\u003c\/h2\u003e\u003cp\u003eThis Namura .040 over bore piston kit is a high-performance replacement for Kawasaki Prairie 650 and Brute Force 650 ATVs, offering an 81mm bore for increased displacement and power. The kit includes a forged piston, rings, and wrist pin for a direct fit upgrade. Designed for riders seeking reliable power gains from their .040 over bore rebuild.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .040 over bore piston kit provides a precision-machined 81mm piston for Kawasaki Prairie 650 and Brute Force 650 engines, delivering enhanced compression and durability. This piston kit is engineered for a secure fit and improved performance over stock, making it a trusted choice for rebuilds and performance upgrades. Whether restoring or modifying your Kawasaki ATV, this .040 over bore piston kit delivers dependable results.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e81mm bore size for increased displacement and power output\u003c\/li\u003e\n\u003cli\u003eForged aluminum construction for high strength and heat resistance\u003c\/li\u003e\n\u003cli\u003ePrecision-machined pin bore and ring grooves for accurate fit\u003c\/li\u003e\n\u003cli\u003eIncludes piston, rings, and wrist pin for complete installation\u003c\/li\u003e\n\u003cli\u003e.040 overbore allows for cylinder cleanup and performance gain\u003c\/li\u003e\n\u003cli\u003eCompatible with standard Kawasaki Prairie 650 and Brute Force 650 connecting rods\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Kawasaki Prairie 650\u003c\/li\u003e\n\u003cli\u003efor Kawasaki Brute Force 650\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding and recreational ATV use\u003c\/li\u003e\n\u003cli\u003eMudding and off-road performance builds\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds for Kawasaki 650cc twin-cylinder ATVs\u003c\/li\u003e\n\u003cli\u003ePerformance upgrades for increased torque and horsepower\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.040 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Components\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, rings, wrist pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKawasaki Prairie 650 and Brute Force 650\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 rejet the carburetor after installing this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e It is often recommended to rejet the carburetor when increasing bore size to optimize air-fuel mixture for the additional displacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this piston kit fit a stock cylinder with just a .040 overbore? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit is designed for cylinders bored to 81mm (0.040 over standard), but always measure your cylinder and confirm piston clearance before assembly.\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":44890689208406,"sku":"SZ1F12622","price":153.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_5de20f58-53d7-45e6-91cc-22879fa25400.jpg?v=1781142987","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-kit-for-kawasaki-prairie-650-brute-force-650-81mm","provider":"Solid Spare","version":"1.0","type":"link"}