{"product_id":"namura-060-over-bore-top-end-kit-for-yamaha-big-bear-250-2007-2008-2009-72-5mm","title":"Namura .060 Over Bore Top End Kit for Yamaha Big Bear 250 2007 2008 2009 72.5mm","description":"\u003ch2\u003eTop End Kit for Yamaha Big Bear 250\u003c\/h2\u003e\u003cp\u003eThis top end kit is designed for Yamaha Big Bear 250 ATVs from 2007-2009, featuring a .060 over bore size of 72.5mm to restore engine compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis top end kit provides all necessary components to refresh a Yamaha Big Bear 250 engine after a .060 over bore. It includes a high-quality piston, rings, and gaskets tailored for the 2007-2009 model years. The kit delivers a reliable top end kit solution for maintaining peak engine output.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined piston with .060 over bore (72.5mm diameter)\u003c\/li\u003e\n\u003cli\u003eComplete ring set for optimal sealing\u003c\/li\u003e\n\u003cli\u003eWrist pin and circlips for secure installation\u003c\/li\u003e\n\u003cli\u003eFull top end gasket set including head, base, and valve cover gaskets\u003c\/li\u003e\n\u003cli\u003eEngineered for sustained power in 250cc ATV engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha Big Bear 250 (2007-2009)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding over rough terrain\u003c\/li\u003e\n\u003cli\u003eUtility work on farms and ranches\u003c\/li\u003e\n\u003cli\u003eHunting and outdoor recreation\u003c\/li\u003e\n\u003cli\u003eRecreational weekend riding\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\u003e72.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Bore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.060\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha Big Bear 250 4-stroke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2007-2009\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 Will this kit work with a stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this kit is designed for a cylinder that has been bored .060 over; it will not fit a stock bore without machining.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Are installation instructions included? \u003cstrong\u003eA:\u003c\/strong\u003e General guidance is provided, but professional installation is recommended due to precise tolerances.\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":44890904461398,"sku":"SZ1F13517","price":175.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_435ced8b-aa81-4c98-9145-f6334e9068d2.jpg?v=1781144222","url":"https:\/\/www.solidspare.com\/products\/namura-060-over-bore-top-end-kit-for-yamaha-big-bear-250-2007-2008-2009-72-5mm","provider":"Solid Spare","version":"1.0","type":"link"}