{"product_id":"namura-040-over-bore-top-end-rebuild-kit-for-yamaha-big-bear-250-2007-2009-72mm","title":"Namura .040 Over Bore Top End Rebuild Kit for Yamaha Big Bear 250 2007-2009 72mm","description":"\u003ch2\u003eNamura .040 Over Bore Top End Rebuild Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis top end rebuild kit is designed for the Yamaha Big Bear 250 models from 2007 to 2009, featuring a 72mm bore and .040 oversize, providing all components needed for a complete top end overhaul.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .040 over bore top end rebuild kit delivers a complete solution for restoring compression and performance in your Yamaha Big Bear 250. This top end rebuild kit includes piston, rings, pin, and gaskets engineered to match the 72mm bore specification. Whether tackling a rebuild or replacing worn components, this top end rebuild kit is the reliable choice for your ATV.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-quality aluminum alloy piston for durability\u003c\/li\u003e\n\u003cli\u003ePrecision-machined cylinder bore ensures proper fit\u003c\/li\u003e\n\u003cli\u003eDurable chrome-plated piston rings reduce wear\u003c\/li\u003e\n\u003cli\u003eComplete gasket set included for a thorough rebuild\u003c\/li\u003e\n\u003cli\u003e.040 oversize increases displacement for added power\u003c\/li\u003e\n\u003cli\u003eDirect replacement fit for stock components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Big Bear 250 2007\u003c\/li\u003e\n\u003cli\u003efor Yamaha Big Bear 250 2008\u003c\/li\u003e\n\u003cli\u003efor Yamaha Big Bear 250 2009\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\u003eUtility work such as hauling and towing\u003c\/li\u003e\n\u003cli\u003eHunting and off-road exploration\u003c\/li\u003e\n\u003cli\u003eFarm and ranch maintenance tasks\u003c\/li\u003e\n\u003cli\u003eGeneral ATV performance restoration\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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72mm\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 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop End Rebuild Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha Big Bear 250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYear Range\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 Is this kit compatible with a stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e The kit is designed for use with a cylinder bored to .040 oversize; ensure your cylinder is machined accordingly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit include installation instructions? \u003cstrong\u003eA:\u003c\/strong\u003e Professional installation is recommended; basic instructions may be included but always refer to the service manual.\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":44890904363094,"sku":"SZ1F13514","price":175.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_a1bf04e9-4a02-4f0d-bc90-a3fd1a4ffab0.jpg?v=1781144218","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-top-end-rebuild-kit-for-yamaha-big-bear-250-2007-2009-72mm","provider":"Solid Spare","version":"1.0","type":"link"}