Motorcycle Accessories One Way Start Clutch Bearing For YZ450X YZ250X WR450F 2003-2006 2012-2016 WR250F 2003 2015-2016 The one way start clutch bearing is designed for motorcycle models including YZ450X, YZ250X, WR450F, and WR250F.Constructed from forged steel, this bearing supports under conditions.It features a fully assembled design with hardened sprague rollers that assist in efficient power transmission.The material is induction heat treated to improve resistance to wear.This product has been externally tested and meets ISO9001 certification standards.It includes 16 beads and is intended as a direct replacement for components, supporting straightforward installation and consistent engine starting function.Compatible with selected model years from 2003 to 2016, this one way bearing suits a range of applications for riders maintaining or upgrading their motorcycles.The design allows for ease of use during servicing, making it suitable for both experienced mechanics and riders performing their own maintenance.Models such as YZ250, YZ450, and WR250F are supported, proper fit and functional.Compatibility : This is a third-party replacement component.Brand and model references are included solely to indicate fitment.