1975 Yamaha RD350

1975 Yamaha RD350

Yamaha released the 1975 Yamaha RD350 in 1975 with a 347cc 2-stroke twin powerplant making 39hp — a definitive standard motorcycle.

Specifications

Engine

Type
2-stroke twin
Displacement
347 cc
Cylinders
2
Power
39 hp @ 7500 rpm
Torque
33.0 Nm
Compression
Bore × Stroke
64.0 × 54.0 mm
Cooling
Air-cooled
Fuel System
2x Mikuni carburetors

Chassis & Transmission

Frame
Steel double cradle
Front Suspension
Telescopic fork
Rear Suspension
Twin shock
Front Brake
Single disc
Rear Brake
Drum
Front Tyre
Rear Tyre
Transmission
6-speed
Final Drive
Chain

Performance

Top Speed
165 km/h (103 mph)
¼ Mile

Dimensions & Weight

Dry Weight
150 kg (331 lbs)
Wet Weight
163 kg (359 lbs)
Seat Height
790 mm
Wheelbase
1345 mm
Ground Clearance
Fuel Capacity
13.0 L

History & Story

In 1975, Yamaha launched the 1975 Yamaha RD350 — a standard motorcycle that would come to define an era of motorcycling. Hailing from Japan, it combined Japan engineering with standard motorcycle appeal.

Powering the 1975 Yamaha RD350 is a 347cc 2-stroke twin producing 39hp. This twin-cylinder engine uses air-cooled cooling and draws fuel through 2x Mikuni carburetors. A 6-speed gearbox sends power via chain final drive to the rear wheel.

Built around a steel double cradle frame, the 1975 Yamaha RD350 suspends its 150 kg (331 lbs) on telescopic fork forks and twin shock rear units. Braking relies on single disc at the front and drum at the rear, with a 1345 mm wheelbase providing stability.

Performance-wise, the 1975 Yamaha RD350 achieves a claimed top speed of 165 km/h (103 mph). With a fuel capacity of 13.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 790 mm makes it comfortable for most riders.

Today, the 1975 Yamaha RD350 is considered a respected classic that attracts serious collector interest and continues to appreciate. Parts availability is rated as moderate, making ownership a dedicated pursuit. It remains an icon of Yamaha motorcycling from 1970s.

Known Issues

  • Reed valve deterioration
  • Exhaust power valve carbon buildup
  • Crank seal wear
  • Speedometer gear wear

Fun Facts

  • The 1975 Yamaha RD350 is widely regarded as a milestone in motorcycle history
  • As a two-stroke, the 1975 Yamaha RD350 produced a distinctive exhaust note and required premix or oil injection

Collector Information

Parts Availability
Moderate
Collector Rating
7/10

Resources & Parts