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The 1966 Kawasaki W1 650 and 1976 Yamaha RD400 both compete in the standard segment, offering riders distinct interpretations of the formula.
The 1966 Kawasaki W1 650 from Japan was powered by a 624cc OHV vertical twin producing 50hp at 7000rpm. Weighing 200.0kg (441 lbs) and with a seat height of 800mm, it was aimed at standard riders.
The 1976 Yamaha RD400 by contrast offered 398cc of 2-stroke twin power, delivering 40hp at 7000rpm. Tipping the scales at 153.0kg (337 lbs) with a top speed of 168km/h (104 mph), it offered a distinct riding experience. 1960s motorcycles capture the era of cultural revolution and racing heritage. Iconic models from this decade are among the most desirable classics.
The 1966 Kawasaki W1 650 from Japan was powered by a 624cc OHV vertical twin producing 50hp at 7000rpm. Weighing 200.0kg (441 lbs) and with a seat height of 800mm, it was aimed at standard riders.
The 1976 Yamaha RD400 by contrast offered 398cc of 2-stroke twin power, delivering 40hp at 7000rpm. Tipping the scales at 153.0kg (337 lbs) with a top speed of 168km/h (104 mph), it offered a distinct riding experience. 1960s motorcycles capture the era of cultural revolution and racing heritage. Iconic models from this decade are among the most desirable classics.
Specifications Comparison
| 1966 Kawasaki W1 650 | 1976 Yamaha RD400 | |
|---|---|---|
| Displacement | 624 cc | 398 cc |
| Power | 50 hp | 40 hp |
| Torque | 49.0 Nm | 35.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 170 km/h | 168 km/h |
| Quarter Mile | — | — |
| Dry Weight | 200.0 kg | 153.0 kg |
| Wet Weight | 215.0 kg | 166.0 kg |
| Seat Height | 800 mm | 790 mm |
| Wheelbase | 1420 mm | 1360 mm |
| Fuel Capacity | 15.0 L | 14.0 L |
| Gears | 4 -speed | 6 -speed |
The Verdict
For pure standard performance, the 1966 Kawasaki W1 650 has the edge thanks to more power (50hp vs 40hp) and a higher top speed. The 1976 Yamaha RD400, however, excels when all-round versatility and everyday riding is the priority and offers a lighter package.
About the 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.
Full 1966 Kawasaki W1 650 Profile →About the 1976 Yamaha RD400
Born in 1976, the 1976 Yamaha RD400 is a 398cc twin-cylinder standard motorcycle producing 40hp from Yamaha.
Full 1976 Yamaha RD400 Profile →