The 1974 Honda CB550 Four from Japan was powered by a 544cc SOHC inline-4 producing 50hp at 8500rpm. Weighing 195.0kg (430 lbs) and with a seat height of 800mm, it was aimed at standard riders.
The 1938 Triumph Speed Twin, hailing from United Kingdom, by contrast offered 498cc of OHV twin power, delivering 27hp at 6300rpm. Tipping the scales at 168.0kg (370 lbs) with a top speed of 148km/h (92 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
| 1974 Honda CB550 Four | 1938 Triumph Speed Twin | |
|---|---|---|
| Displacement | 544 cc | 498 cc |
| Power | 50 hp | 27 hp |
| Torque | 43.0 Nm | 36.0 Nm |
| Cylinders | 4 | 2 |
| Top Speed | 180 km/h | 148 km/h |
| Quarter Mile | — | — |
| Dry Weight | 195.0 kg | 168.0 kg |
| Wet Weight | 211.0 kg | 180.0 kg |
| Seat Height | 800 mm | 780 mm |
| Wheelbase | 1410 mm | 1370 mm |
| Fuel Capacity | 14.0 L | 14.0 L |
| Gears | 5 -speed | 4 -speed |
The Verdict
For pure standard performance, the 1974 Honda CB550 Four has the edge thanks to more power (50hp vs 27hp) and a higher top speed. The 1938 Triumph Speed Twin, however, excels when all-round versatility and everyday riding is the priority and offers a lighter package. For collectors, the 1938 Triumph Speed Twin commands more attention with a 9/10 collectibility rating. Parts availability is good for the 1974 Honda CB550 Four and moderate for the 1938 Triumph Speed Twin — an important factor for any restoration project.
About the 1974 Honda CB550 Four
Honda released the 1974 Honda CB550 Four in 1974 with a 544cc SOHC inline-4 powerplant making 50hp — a definitive standard motorcycle.
Full 1974 Honda CB550 Four Profile →About the 1938 Triumph Speed Twin
The 1938 1938 Triumph Speed Twin packs a 498cc OHV twin engine with 27hp into a standard motorcycle package from Triumph.
Full 1938 Triumph Speed Twin Profile →