(1981 / Production Model)
This model was created to provide the same 2-stroke machine appeal as the RZ250 and RZ350, but in a 50cc supersports package. The lightweight, highly rigid double cradle frame mounted a liquid-cooled, 2-stroke, single-cylinder engine with the Yamaha Energy Induction System (YEIS) and a 6-speed close-ratio transmission. The chassis had a Monocross suspension, 18-inch cast wheels for the front and rear and a front disc brake, and the RZ50 boasted the best performance in its class at the time.
- Overall length × width × height: 1,910mm × 685mm × 1,000mm
- Weight: 75kg
- Engine type: Liquid-cooled, 2-stroke, single-cylinder, 49cm³
- Maximum power output: 5.3kW (7.2PS) / 9,000r/min
- Maximum torque: 6.1N･m (0.62kgf･m) / 8,000r/min
- Price: ¥176,000
*All figures, etc. in a model's description or specifications are from when the model was originally released.