(1964 / Production Model)
This was the first model that adopted “Autolube,” Yamaha Motor's unique system to supply engine oil separately and eliminating bothersome mixing with the fuel. A 2-stroke, single-cylinder engine with rotary disc valve air intake inherited from the YA-5 was mounted on a pressed steel monocoque frame. With dustproof/waterproof 150mm front/rear drum brakes and a telescopic front fork, the YA-6 achieved both the great performance expected of a 125cc model and a high level of practicality.
- Overall length × width × height: 1,920mm × 725mm × 1,045mm
- Weight: 120kg
- Engine type: Air-cooled, 2-stroke, single-cylinder, 125cm³
- Maximum power output: 8.1kW (11.0PS) / 6,700r/min
- Maximum torque: 12.3N･m (1.25kgf･m) / 5,000r/min
- Price: ¥135,000
*All figures, etc. in a model's description or specifications are from when the model was originally released.