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The 1979 Honda CB750K and 1973 Kawasaki Z1-900 RS are both iconic 1970s standards that defined their respective markets.
The 1979 Honda CB750K from Japan was powered by a 748cc SOHC inline-4 producing 73hp at 9000rpm. Weighing 230.0kg (507 lbs) and with a seat height of 810mm, 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 1979 Honda CB750K from Japan was powered by a 748cc SOHC inline-4 producing 73hp at 9000rpm. Weighing 230.0kg (507 lbs) and with a seat height of 810mm, 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
| 1979 Honda CB750K | 1973 Kawasaki Z1-900 RS | |
|---|---|---|
| Displacement | 748 cc | 903 cc |
| Power | 73 hp | 82 hp |
| Torque | 59.0 Nm | 73.0 Nm |
| Cylinders | 4 | 4 |
| Top Speed | 190 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 230.0 kg | 230.0 kg |
| Wet Weight | 248.0 kg | 250.0 kg |
| Seat Height | 810 mm | 820 mm |
| Wheelbase | 1480 mm | 1490 mm |
| Fuel Capacity | 17.0 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 73hp) and a higher top speed. The 1979 Honda CB750K, 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. Parts availability is good for the 1979 Honda CB750K and moderate for the 1973 Kawasaki Z1-900 RS — an important factor for any restoration project.
About the 1979 Honda CB750K
Born in 1979, the 1979 Honda CB750K is a 748cc four-cylinder standard motorcycle producing 73hp from Honda.
Full 1979 Honda CB750K 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 →