One Way Bearing Starter Overrunning Clutch Beads For XT250 TTR250 YBR250 XV250 YZ450X YP250 YZF250 YFZ450 This one way bearing starter overrunning clutch beads is designed to fit models including XT250, TTR250, YBR250, XV250, YZ450X, YP250, YZF250, and YFZ450.It functions as a replacement part for the starter system, allowing smooth engagement and disengagement of the engine's starting mechanism.The component is built to meet standard specifications for durability and performance in motorcycle applications. This is not an part.All brand mentions are used strictly for compatibility reference.