Motorcycle One Way Starter Bearing Overrunning Clutch Beads For 660 700 YZF R1 1000 660 XTX660 XT660 X SRX400 One way starter bearing designed for use with motorcycle engines.Functions as an overrunning clutch to engage and disengage the starter mechanism.Contains machined beads for.Compatible with specified motorcycle models.Installs directly into the starter system to transmit rotational force in a single direction.Ensures smooth engagement during engine start and prevents back drive once the engine is running.construction intended for repeated use under standard operating conditions.Compatibility Note: This is a third-party replacement component.Brand and model references are included solely to indicate fitment.