Yamaha Drive Sprocket 12 Tooth 93812-12010-00. Overview. The Yamaha Drive Sprocket 12 Tooth 93812-12010-00 is a genuine original equipment manufacturer component designed to deliver smooth and efficient power transfer within your engine or drivetrain system. With its 12-tooth configuration, this sprocket ensures proper chain engagement and consistent rotational performance, helping maintain accurate timing and reliable operation.. Engineered to Yamaha's strict standards, this sprocket provides a