Yamaha Motor Co., Ltd. 20E-16111-00-00 Primary Drive Gear

The Yamaha 20E-16111-00-00 Primary Drive Gear is a hardened-steel, shaft-mounted gear that transmits power from the crankshaft to the clutch in Yamaha engine and transmission systems. It is used in motorcycles, scooters, and other engine-powered vehicles where reliable torque transfer and smooth engagement are required within the engine's primary drive. This precision-machined gear from Yamaha (part number 20E-16111-00-00) is intended for replacement, repair, or retrofit to restore drivetrain performance, with common replacements including 20E-16111-10-00, 2H7-16111-00-00, and 3Y1-16111-00-00.