VS
The 1972 Kawasaki Z1 900 and 1980 Yamaha XJ650 both compete in the standard segment, offering riders distinct interpretations of the formula.
The 1972 Kawasaki Z1 900 from Japan was powered by a 903cc DOHC inline-4 producing 82hp at 8500rpm. Weighing 230.0kg (507 lbs) and with a seat height of 820mm, it was aimed at standard riders.
The 1980 Yamaha XJ650 by contrast offered 653cc of DOHC inline-4 power, delivering 71hp at 9000rpm. Tipping the scales at 215.0kg (474 lbs) with a top speed of 190km/h (118 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
The 1972 Kawasaki Z1 900 from Japan was powered by a 903cc DOHC inline-4 producing 82hp at 8500rpm. Weighing 230.0kg (507 lbs) and with a seat height of 820mm, it was aimed at standard riders.
The 1980 Yamaha XJ650 by contrast offered 653cc of DOHC inline-4 power, delivering 71hp at 9000rpm. Tipping the scales at 215.0kg (474 lbs) with a top speed of 190km/h (118 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
Specifications Comparison
| 1972 Kawasaki Z1 900 | 1980 Yamaha XJ650 | |
|---|---|---|
| Displacement | 903 cc | 653 cc |
| Power | 82 hp | 71 hp |
| Torque | 73.0 Nm | 56.0 Nm |
| Cylinders | 4 | 4 |
| Top Speed | 210 km/h | 190 km/h |
| Quarter Mile | — | — |
| Dry Weight | 230.0 kg | 215.0 kg |
| Wet Weight | 250.0 kg | 232.0 kg |
| Seat Height | 820 mm | 800 mm |
| Wheelbase | 1490 mm | 1440 mm |
| Fuel Capacity | 18.0 L | 16.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
For pure standard performance, the 1972 Kawasaki Z1 900 has the edge thanks to more power (82hp vs 71hp) and a higher top speed. The 1980 Yamaha XJ650, however, excels when all-round versatility and everyday riding is the priority and offers a lighter package. For collectors, the 1972 Kawasaki Z1 900 commands more attention with a 9/10 collectibility rating.
About the 1972 Kawasaki Z1 900
The 1972 1972 Kawasaki Z1 900 is a 903cc four-cylinder standard motorcycle that became one of Kawasaki's most memorable motorcycles of the 1970s.
Full 1972 Kawasaki Z1 900 Profile →About the 1980 Yamaha XJ650
Born in 1980, the 1980 Yamaha XJ650 is a 653cc four-cylinder standard motorcycle producing 71hp from Yamaha.
Full 1980 Yamaha XJ650 Profile →