The 1959 Triumph TR6 Trophy from United Kingdom was powered by a 649cc OHV twin producing 40hp at 6500rpm. Weighing 170.0kg (375 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1959 Triumph Bonneville T120 by contrast offered 649cc of OHV twin power, delivering 46hp at 6500rpm. Tipping the scales at 172.0kg (379 lbs) with a top speed of 177km/h (110 mph), it offered a distinct riding experience. 1950s bikes represent the golden age of British motorcycling and early Japanese innovation, with well-maintained examples commanding premium prices.
Specifications Comparison
| 1959 Triumph TR6 Trophy | 1959 Triumph Bonneville T120 | |
|---|---|---|
| Displacement | 649 cc | 649 cc |
| Power | 40 hp | 46 hp |
| Torque | 48.0 Nm | 52.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 170 km/h | 177 km/h |
| Quarter Mile | — | — |
| Dry Weight | 170.0 kg | 172.0 kg |
| Wet Weight | 183.0 kg | 185.0 kg |
| Seat Height | 790 mm | 790 mm |
| Wheelbase | 1400 mm | 1400 mm |
| Fuel Capacity | 14.0 L | 14.0 L |
| Gears | 4 -speed | 4 -speed |
The Verdict
Comparing these two Triumph machines reveals the brand's evolution. The 1959 Triumph TR6 Trophy laid the groundwork with 40hp, while the later 1959 Triumph Bonneville T120 pushed output to 46hp. From a collector's perspective, the 1959 Triumph Bonneville T120 holds the edge with a 9/10 rating. Either way, both are worthy additions to any Triumph collection. Parts availability is moderate for the 1959 Triumph TR6 Trophy and good for the 1959 Triumph Bonneville T120 — an important factor for any restoration project.
About the 1959 Triumph TR6 Trophy
Introduced in 1959, the 1959 Triumph TR6 Trophy features a 649cc OHV twin engine producing 40hp, establishing itself as a notable standard motorcycle.
Full 1959 Triumph TR6 Trophy Profile →About the 1959 Triumph Bonneville T120
The 1959 1959 Triumph Bonneville T120 packs a 649cc OHV twin engine with 46hp into a standard motorcycle package from Triumph.
Full 1959 Triumph Bonneville T120 Profile →