{"product_id":"namura-040-over-top-end-kit-for-yamaha-big-bear-400-1993-1999-kodiak-84mm","title":"Namura .040 Over Top End Kit for Yamaha Big Bear 400 \u0026 1993-1999 Kodiak 84mm","description":"\u003ch2\u003e.040 Over Top End Kit for Yamaha Big Bear 400 \u0026amp; Kodiak 84mm\u003c\/h2\u003e\u003cp\u003eThis .040 over top end kit includes piston, rings, wrist pin, and gaskets to restore engine compression and performance for Yamaha Big Bear 400 and 1993-1999 Kodiak ATVs with a bored cylinder.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eDesigned as a direct replacement .040 over top end kit for Yamaha Big Bear 400 and Kodiak ATVs, this oversized kit restores lost compression and power after cylinder boring. It includes a high-quality .040 over piston, rings, and wrist pin for a reliable rebuild. Ideal for owners looking to refresh their engine top end with a slightly larger bore.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined .040 over piston matches the increased bore size\u003c\/li\u003e\n\u003cli\u003eHigh-strength rings provide consistent sealing and oil control\u003c\/li\u003e\n\u003cli\u003eIncludes all necessary gaskets for a complete top end overhaul\u003c\/li\u003e\n\u003cli\u003eWrist pin and circlips are heat-treated for durability\u003c\/li\u003e\n\u003cli\u003eBalanced piston design reduces vibration during operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Big Bear 400\u003c\/li\u003e\n\u003cli\u003efor Yamaha Kodiak (1993-1999)\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\u003eFarm and ranch utility tasks requiring reliable power\u003c\/li\u003e\n\u003cli\u003eHunting and outdoor expeditions where engine dependability is critical\u003c\/li\u003e\n\u003cli\u003eRestoring top end performance on high-mileage ATVs\u003c\/li\u003e\n\u003cli\u003eRebuilding engines that have been bored to .040 over size\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\u003e84mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.040 Over\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 What is included in the top end kit? \u003cstrong\u003eA:\u003c\/strong\u003e The kit typically includes a piston, rings, wrist pin, circlips, and necessary gaskets for a complete top end rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to hone the cylinder before installation? \u003cstrong\u003eA:\u003c\/strong\u003e For an overbore kit, the cylinder must be machined to the corresponding oversized dimension and honed to achieve proper ring seating.\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":44949764178006,"sku":"SZ1F14367","price":208.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_caedad67-89cb-4c5c-8a47-dec0bbb07702.jpg?v=1781398366","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-top-end-kit-for-yamaha-big-bear-400-1993-1999-kodiak-84mm","provider":"Solid Spare","version":"1.0","type":"link"}