RD 350

1975 Yamaha RD 350 Technical Analysis & Specification Breakdown

Positioned in Yamaha's classic motorcycle lineup, the 1975 Yamaha RD 350 features a 347 cc (21.2 cu in) air-cooled twin, two-stroke configuration. In factory specification, peak output is rated at 39 HP (28.5 kW) at 7,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 112.4 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the RD 350 measures 162 kg (357 lbs) wet (curb), translating to a power-to-weight ratio of 0.24 HP/kg (4.15 kg per horsepower). The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 170 km/h (106 mph).

Within MotoLibrary's Yamaha archive, this model family spans 7 indexed model years from 1975 to 1988, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.