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 Suzuki GS400 by contrast offered 398cc of DOHC twin power, delivering 36hp at 8500rpm. Tipping the scales at 182.0kg (401 lbs) with a top speed of 155km/h (96 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 Suzuki GS400 | |
|---|---|---|
| Displacement | 624 cc | 398 cc |
| Power | 50 hp | 36 hp |
| Torque | 49.0 Nm | 31.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 170 km/h | 155 km/h |
| Quarter Mile | — | — |
| Dry Weight | 200.0 kg | 182.0 kg |
| Wet Weight | 215.0 kg | 198.0 kg |
| Seat Height | 800 mm | 790 mm |
| Wheelbase | 1420 mm | 1370 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 36hp) and a higher top speed. The 1976 Suzuki GS400, however, excels when all-round versatility and everyday riding is the priority and offers a lighter package. For collectors, the 1966 Kawasaki W1 650 commands more attention with a 6/10 collectibility rating. Parts availability is moderate for the 1966 Kawasaki W1 650 and good for the 1976 Suzuki GS400 — an important factor for any restoration project.
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 Suzuki GS400
Introduced in 1976, the 1976 Suzuki GS400 features a 398cc DOHC twin engine producing 36hp, establishing itself as a notable standard motorcycle.
Full 1976 Suzuki GS400 Profile →