{"product_id":"wiseco-crankshaft-kit-yamaha-wr250f-wpc141","title":"WISECO Crankshaft Kit Yamaha WR250F WPC141","description":"Crankshaft Kit - Yamaha WR250F\n\u003cp\u003eWISECO Crankshaft Kit for Yamaha WR250F models, manufacturer part number WPC141. This kit includes a crankshaft assembly, main bearings, and a bottom-end gasket kit.\u003c\/p\u003e\u003cp\u003eThe crankshaft is factory assembled and precision trued to OEM specifications. It features a double-forged Wiseco connecting rod designed for dimensional consistency through improved grain flow, along with shot-peening to eliminate residual stresses and smoothly blend the rod forging surfaces. A corrosion-resistant surface treatment helps protect the component.\u003c\/p\u003e\u003cp\u003eThe crank pin bearing radial running clearance is optimized for performance, while precision honing provides an ultra-round bearing surface. Precision-engineered oiling slots maximize rod strength and bearing life. Double-drilled small ends provide the piston pin with additional lubrication and cooling, helping reduce top-end distortion caused by thermal transfer from the piston.\u003c\/p\u003e\u003cp\u003eThis WISECO crankshaft kit fits 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012, and 2013 Yamaha WR250F models.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCrankshaft Assembly: Factory assembled and precision trued to OEM specifications.\u003c\/li\u003e\n\u003cli\u003eConnecting Rod: Double-forged Wiseco connecting rod with improved grain flow for dimensional consistency.\u003c\/li\u003e\n\u003cli\u003eShot-Peened Construction: Helps eliminate residual stresses and smoothly blend rod forging surfaces.\u003c\/li\u003e\n\u003cli\u003eBearing Surface: Precision honing ensures an ultra-round bearing surface.\u003c\/li\u003e\n\u003cli\u003eOiling Slots: Precision-engineered slots maximize rod strength and bearing life.\u003c\/li\u003e\n\u003cli\u003eSmall-End Lubrication: Double-drilled small ends provide additional piston-pin lubrication and cooling.\u003c\/li\u003e\n\u003cli\u003eKit Contents: Includes crankshaft assembly, main bearings, and bottom-end gasket kit.\u003c\/li\u003e\n\u003cli\u003eVehicle Fitment: Fits 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012, and 2013 Yamaha WR250F models.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2003 Yamaha WR250F\u003cbr\u003e\n2004 Yamaha WR250F\u003cbr\u003e\n2005 Yamaha WR250F\u003cbr\u003e\n2006 Yamaha WR250F\u003cbr\u003e\n2007 Yamaha WR250F\u003cbr\u003e\n2008 Yamaha WR250F\u003cbr\u003e\n2009 Yamaha WR250F\u003cbr\u003e\n2010 Yamaha WR250F\u003cbr\u003e\n2011 Yamaha WR250F\u003cbr\u003e\n2012 Yamaha WR250F\u003cbr\u003e\n2013 Yamaha WR250F","brand":"WISECO","offers":[{"title":"Default Title","offer_id":68487893090539,"sku":"09210111","price":621.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/147487.png?v=1794386099","url":"https:\/\/ctracingservices.com\/products\/wiseco-crankshaft-kit-yamaha-wr250f-wpc141","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}