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The 1970 Honda CB100 and 1973 Kawasaki Z1-900 RS are both iconic 1970s standards that defined their respective markets.
The 1970 Honda CB100 from Japan was powered by a 99cc SOHC single producing 10hp at 9500rpm. Weighing 87.0kg (192 lbs) and with a seat height of 750mm, it was aimed at standard riders.
The 1973 Kawasaki Z1-900 RS by contrast offered 903cc of DOHC inline-4 power, delivering 82hp 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 1970 Honda CB100 from Japan was powered by a 99cc SOHC single producing 10hp at 9500rpm. Weighing 87.0kg (192 lbs) and with a seat height of 750mm, it was aimed at standard riders.
The 1973 Kawasaki Z1-900 RS by contrast offered 903cc of DOHC inline-4 power, delivering 82hp 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
| 1970 Honda CB100 | 1973 Kawasaki Z1-900 RS | |
|---|---|---|
| Displacement | 99 cc | 903 cc |
| Power | 10 hp | 82 hp |
| Torque | 7.5 Nm | 73.0 Nm |
| Cylinders | 1 | 4 |
| Top Speed | 105 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 87.0 kg | 230.0 kg |
| Wet Weight | 96.0 kg | 250.0 kg |
| Seat Height | 750 mm | 820 mm |
| Wheelbase | 1195 mm | 1490 mm |
| Fuel Capacity | 8.5 L | 18.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
For pure standard performance, the 1973 Kawasaki Z1-900 RS has the edge thanks to more power (82hp vs 10hp) and a higher top speed. The 1970 Honda CB100, however, excels when all-round versatility and everyday riding is the priority. For collectors, the 1973 Kawasaki Z1-900 RS commands more attention with a 8/10 collectibility rating.
About the 1970 Honda CB100
Introduced in 1970, the 1970 Honda CB100 features a 99cc SOHC single engine producing 10hp, establishing itself as a notable standard motorcycle.
Full 1970 Honda CB100 Profile →About the 1973 Kawasaki Z1-900 RS
Kawasaki released the 1973 Kawasaki Z1-900 RS in 1973 with a 903cc DOHC inline-4 powerplant making 82hp — a definitive standard motorcycle.
Full 1973 Kawasaki Z1-900 RS Profile →