{"product_id":"namura-040-over-bore-top-end-kit-for-yamaha-beartracker-250-1999-2004-72mm","title":"Namura .040 Over Bore Top End Kit for Yamaha BearTracker 250 1999-2004 72mm","description":"\u003ch2\u003eNamura .040 Over Bore Top End Kit for Yamaha BearTracker 250 1999-2004 72mm\u003c\/h2\u003e\u003cp\u003eThis Namura .040 over bore top end kit provides the necessary components to rebuild the upper cylinder of a Yamaha BearTracker 250 from 1999 to 2004, featuring a 72mm bore size.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .040 over bore top end kit is a complete set of components designed to restore compression and power in Yamaha BearTracker 250 ATVs from 1999 through 2004. This top end kit includes a piston, rings, wrist pin, and circlips to refresh the cylinder after an overbore operation. It is intended for riders and mechanics performing a top end rebuild on the BearTracker 250 engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-cast piston for reliable compression\u003c\/li\u003e\n\u003cli\u003eIncludes .040 over bore piston rings for a tight seal\u003c\/li\u003e\n\u003cli\u003eHeat-treated wrist pin for durability\u003c\/li\u003e\n\u003cli\u003eIncludes all necessary circlips for secure assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha BearTracker 250 1999-2004\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding and utility work on ATVs\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds after wear or damage\u003c\/li\u003e\n\u003cli\u003eRestoring lost power in older machines\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\u003e72mm\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 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha BearTracker 250\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 the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e This kit is for use after a .040 overbore; if your cylinder is not already bored, you will need to have it machined to 72mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is the kit compatible with the original cylinder head? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this top end kit works with the stock cylinder head as long as the head gasket is replaced.\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":44890904297558,"sku":"SZ1F13512","price":175.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f64e6659-8500-4ba4-97fc-d74bdfdacdbf.jpg?v=1781144216","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-top-end-kit-for-yamaha-beartracker-250-1999-2004-72mm","provider":"Solid Spare","version":"1.0","type":"link"}