1970 Yamaha XS-1 650

1970 Yamaha XS-1 650

The 1970 1970 Yamaha XS-1 650 packs a 654cc OHV vertical twin engine with 53hp into a standard motorcycle package from Yamaha.

Specifications

Engine

Type
OHV vertical twin
Displacement
654 cc
Cylinders
2
Power
53 hp @ 7000 rpm
Torque
53.0 Nm
Compression
Bore × Stroke
75.0 × 74.0 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
Drum
Rear Brake
Drum
Front Tyre
Rear Tyre
Transmission
5-speed
Final Drive
Chain

Performance

Top Speed
170 km/h (106 mph)
¼ Mile

Dimensions & Weight

Dry Weight
195 kg (430 lbs)
Wet Weight
212 kg (467 lbs)
Seat Height
810 mm
Wheelbase
1430 mm
Ground Clearance
Fuel Capacity
14.0 L

History & Story

The 1970 1970 Yamaha XS-1 650 was introduced by Yamaha as a standard motorcycle aimed at riders seeking standard motorcycle performance and style. Manufactured in Japan, it represented Yamaha's vision for the twin-cylinder standard motorcycle market during the 1970s.

The 1970 Yamaha XS-1 650 is motivated by a 654cc OHV vertical twin twin-cylinder unit delivering 53hp at 7000 rpm. Breathing through 2x Mikuni carburetors and kept cool by air-cooled, the engine drives through a 5-speed transmission with chain final drive.

The chassis employs a steel double cradle frame with telescopic fork up front and twin shock at the rear. Stopping power comes from drum front and drum rear brakes. Tipping the scales at 195 kg (430 lbs) dry, the 1970 Yamaha XS-1 650 offers a manageable riding experience with a 1430 mm wheelbase.

Performance-wise, the 1970 Yamaha XS-1 650 achieves a claimed top speed of 170 km/h (106 mph). With a fuel capacity of 14.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 810 mm makes it comfortable for most riders.

Today, the 1970 Yamaha XS-1 650 is considered a respected classic that attracts serious collector interest and continues to appreciate. Parts availability is rated as good, making ownership relatively straightforward. It remains an icon of Yamaha motorcycling from 1970s.

Known Issues

  • Charging system rotor failures on early models
  • Primary chain adjustment needed
  • Speedometer gear wear

Fun Facts

  • The 1970 Yamaha XS-1 650 is widely regarded as a milestone in motorcycle history
  • The 1970 Yamaha XS-1 650 was produced in Yamaha's Japan facilities
  • The 1970 Yamaha XS-1 650 featured a steel double cradle frame typical of 1970s design philosophy

Collector Information

Parts Availability
Good
Collector Rating
7/10

Resources & Parts