(1957 / Production Model)
As successor to the YA-1, the output of the 2-stroke single-cylinder engine was increased by approx. 1 PS and mounted on a newly designed pressed backbone frame. The un-sprung units featured a bottom-linked type front fork and a swinging arm type rear suspension that gave the model a completely new look. Its unique styling that stressed lightness and power won Yamaha its first Good Design Award ever for a motorcycle.
- Overall length × width × height: 1,870mm × 705mm × 945mm
- Weight: 103.5kg
- Engine type: Air-cooled, 2-stroke, single-cylinder, 123cm³
- Maximum power output: 4.8kW (6.5PS) / 6,000r/min
- Maximum torque: 9.4N･m (0.96kgf･m) / 4,900r/min
- Price: ¥125,000
*All figures, etc. in a model's description or specifications are from when the model was originally released.