VS
The 1972 Kawasaki H2 Mach IV and 1982 Yamaha XJ900 Seca both compete in the standard segment, offering riders distinct interpretations of the formula.
The 1972 Kawasaki H2 Mach IV from Japan was powered by a 748cc 2-stroke triple producing 74hp at 6800rpm. Weighing 192.0kg (423 lbs) and with a seat height of 810mm, it was aimed at standard riders.
The 1982 Yamaha XJ900 Seca by contrast offered 853cc of DOHC inline-4 power, delivering 88hp at 8500rpm. Tipping the scales at 230.0kg (507 lbs) with a top speed of 210km/h (130 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 H2 Mach IV from Japan was powered by a 748cc 2-stroke triple producing 74hp at 6800rpm. Weighing 192.0kg (423 lbs) and with a seat height of 810mm, it was aimed at standard riders.
The 1982 Yamaha XJ900 Seca by contrast offered 853cc of DOHC inline-4 power, delivering 88hp at 8500rpm. Tipping the scales at 230.0kg (507 lbs) with a top speed of 210km/h (130 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 H2 Mach IV | 1982 Yamaha XJ900 Seca | |
|---|---|---|
| Displacement | 748 cc | 853 cc |
| Power | 74 hp | 88 hp |
| Torque | 68.0 Nm | 74.0 Nm |
| Cylinders | 3 | 4 |
| Top Speed | 210 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 192.0 kg | 230.0 kg |
| Wet Weight | 210.0 kg | 248.0 kg |
| Seat Height | 810 mm | 810 mm |
| Wheelbase | 1420 mm | 1490 mm |
| Fuel Capacity | 16.0 L | 20.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
These two standards are remarkably well-matched. With 74hp versus 88hp, the performance difference is marginal. The choice between them comes down to brand loyalty, aesthetics, and riding preference. For collectors, the 1972 Kawasaki H2 Mach IV commands more attention with a 9/10 collectibility rating. Parts availability is moderate for the 1972 Kawasaki H2 Mach IV and good for the 1982 Yamaha XJ900 Seca — an important factor for any restoration project.
About the 1972 Kawasaki H2 Mach IV
A standard motorcycle from 1972, the 1972 Kawasaki H2 Mach IV delivers 74hp from its 748cc 2-stroke triple engine.
Full 1972 Kawasaki H2 Mach IV Profile →About the 1982 Yamaha XJ900 Seca
Introduced in 1982, the 1982 Yamaha XJ900 Seca features a 853cc DOHC inline-4 engine producing 88hp, establishing itself as a notable standard motorcycle.
Full 1982 Yamaha XJ900 Seca Profile →