One Way Bearing Starter Clutch Overrunning Clutch Bead For GSXR1000 K4 - K8 KFX450R KSF450B KLX450 This one way bearing starter clutch is designed to fit specific motorcycle and all-terrain vehicle models.It functions as an overrunning clutch component, allowing rotational in one direction while preventing it in the opposite.The unit is built for use in starter systems where engagement and disengagement of drive mechanisms are required.Compatible with select models from model years 2008 to 2014.Suitable for use on specified motorcycles and ATVs equipped with matching starter clutch configurations.Please verify dimensions and specifications against your existing part to ensure compatibility before installation.Images are provided to assist in identification and comparison.