Yamaha 336-16111-00-00 Primary Drive Gear

The Yamaha 336-16111-00-00 primary drive gear is an OEM engine transmission component that transfers rotational power from the crankshaft to the clutch in small-displacement Yamaha motorcycles. Compatible with RT100, MX100, and similar models, this 19T gear is made from hardened steel and is designed to reside inside the engine crankcase as part of the primary drive train. It serves as the torque-transferring link between the crankshaft and the clutch assembly, supporting reliable power transmission and smooth drivetrain operation for off-road use and vintage Yamaha platforms. As an original Yamaha part, availability may be limited depending on production status. Common replacements include Yamaha 336-16111-01-00, Yamaha 2X6-16111-00-00, and Yamaha 3Y6-16111-00-00 for compatible primary drive gear options.