{"product_id":"namura-040-over-bore-piston-kit-for-yamaha-kodiak-grizzly-400-2000-2008-85-5mm","title":"Namura .040 Over Bore Piston Kit for Yamaha Kodiak, Grizzly 400 2000-2008 85.5mm","description":"\u003ch2\u003eNamura .040 Over Bore Piston Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis piston kit is a .040 overbore replacement component for Yamaha Kodiak and Grizzly 400 ATVs, featuring an 85.5mm diameter to restore engine compression and power.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura .040 over bore piston kit for Yamaha Kodiak and Grizzly 400 models from 2000 to 2008 delivers a reliable top-end rebuild solution. It increases displacement slightly while maintaining OEM specifications for durability. The kit includes a piston, rings, wrist pin, and circlips for a complete installation.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-strength cast aluminum alloy piston for long service life\u003c\/li\u003e\n\u003cli\u003eMoly-coated ring reduces friction and improves sealing\u003c\/li\u003e\n\u003cli\u003ePrecision 85.5mm bore diameter matched to .040 overbore\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and retaining circlips for secure assembly\u003c\/li\u003e\n\u003cli\u003eDesigned to meet or exceed OEM performance standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Kodiak 400 (2000-2008)\u003c\/li\u003e\n\u003cli\u003efor Yamaha Grizzly 400 (2000-2008)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestoring top-end performance in worn engines\u003c\/li\u003e\n\u003cli\u003eRebuilding ATVs after high-mileage operation\u003c\/li\u003e\n\u003cli\u003eIncreasing compression for better throttle response\u003c\/li\u003e\n\u003cli\u003eReplacing damaged pistons due to overheating or wear\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\u003e85.5mm\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 inches (1.016mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha Kodiak 400, Grizzly 400 (2000-2008)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, rings, wrist pin, circlips\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 re-plate or re-hone the cylinder when using this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, an .040 overbore requires the cylinder to be bored and honed to the exact diameter to ensure proper clearance and ring seating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this kit compatible with the original head gasket? \u003cstrong\u003eA:\u003c\/strong\u003e The kit uses standard gasket dimensions, but we recommend using a new head gasket and following torque specifications during assembly for a proper seal.\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":44890903248982,"sku":"SZ1F13491","price":175.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_9ad425b5-7163-476d-a083-1cc7c2122e7b.jpg?v=1781144189","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-kit-for-yamaha-kodiak-grizzly-400-2000-2008-85-5mm","provider":"Solid Spare","version":"1.0","type":"link"}