1966 Kawasaki W1 650

1966 Kawasaki W1 650

Kawasaki released the 1966 Kawasaki W1 650 in 1966 with a 624cc OHV vertical twin powerplant making 50hp — a definitive standard motorcycle.

Specifications

Engine

Type
OHV vertical twin
Displacement
624 cc
Cylinders
2
Power
50 hp @ 7000 rpm
Torque
49.0 Nm
Compression
Bore × Stroke
75.0 × 70.0 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
4-speed
Final Drive
Chain

Performance

Top Speed
170 km/h (106 mph)
¼ Mile

Dimensions & Weight

Dry Weight
200 kg (441 lbs)
Wet Weight
215 kg (474 lbs)
Seat Height
800 mm
Wheelbase
1420 mm
Ground Clearance
Fuel Capacity
15.0 L

History & Story

In 1966, Kawasaki launched the 1966 Kawasaki W1 650 — 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 1966 Kawasaki W1 650 is a 624cc OHV vertical twin producing 50hp. This twin-cylinder engine uses air-cooled cooling and draws fuel through 2x Mikuni carburetors. A 4-speed gearbox sends power via chain final drive to the rear wheel.

Built around a steel double cradle frame, the 1966 Kawasaki W1 650 suspends its 200 kg (441 lbs) on telescopic fork forks and twin shock rear units. Braking relies on drum at the front and drum at the rear, with a 1420 mm wheelbase providing stability.

Performance-wise, the 1966 Kawasaki W1 650 achieves a claimed top speed of 170 km/h (106 mph). With a fuel capacity of 15.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 800 mm makes it comfortable for most riders.

Known Issues

  • Cam chain issues on high-mileage engines
  • Oil leaks from gaskets and seals
  • Electrical system gremlins

Fun Facts

  • The 1966 Kawasaki W1 650 was produced in Kawasaki's Japan facilities
  • The 1966 Kawasaki W1 650 featured a steel double cradle frame typical of 1960s design philosophy

Collector Information

Parts Availability
Moderate
Collector Rating
6/10

Resources & Parts