VS
The 1976 Kawasaki KZ750 Twin and 1980 Yamaha XJ650 both compete in the standard segment, offering riders distinct interpretations of the formula.
The 1976 Kawasaki KZ750 Twin from Japan was powered by a 745cc DOHC twin producing 55hp at 7500rpm. Weighing 223.0kg (492 lbs) and with a seat height of 810mm, 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 1976 Kawasaki KZ750 Twin from Japan was powered by a 745cc DOHC twin producing 55hp at 7500rpm. Weighing 223.0kg (492 lbs) and with a seat height of 810mm, 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
| 1976 Kawasaki KZ750 Twin | 1980 Yamaha XJ650 | |
|---|---|---|
| Displacement | 745 cc | 653 cc |
| Power | 55 hp | 71 hp |
| Torque | 58.0 Nm | 56.0 Nm |
| Cylinders | 2 | 4 |
| Top Speed | 175 km/h | 190 km/h |
| Quarter Mile | — | — |
| Dry Weight | 223.0 kg | 215.0 kg |
| Wet Weight | 240.0 kg | 232.0 kg |
| Seat Height | 810 mm | 800 mm |
| Wheelbase | 1470 mm | 1440 mm |
| Fuel Capacity | 16.0 L | 16.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
For pure standard performance, the 1980 Yamaha XJ650 has the edge thanks to more power (71hp vs 55hp) and a higher top speed and lower weight. The 1976 Kawasaki KZ750 Twin, however, excels when all-round versatility and everyday riding is the priority. Parts availability is moderate for the 1976 Kawasaki KZ750 Twin and good for the 1980 Yamaha XJ650 — an important factor for any restoration project.
About the 1976 Kawasaki KZ750 Twin
The 1976 1976 Kawasaki KZ750 Twin packs a 745cc DOHC twin engine with 55hp into a standard motorcycle package from Kawasaki.
Full 1976 Kawasaki KZ750 Twin 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 →