Triumph Speed Twin 5T vs Triumph 500 Grand Prix (1966)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Triumph Speed Twin 5Tstacks up against the Triumph 500 Grand Prix. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Triumph Speed Twin 5T | Triumph 500 Grand Prix |
|---|---|---|
| Model year | 1966 | 1950 |
| Price | — | — |
| Engine | 498 cc | 498 cc |
| Horsepower | 27 hp | 40 hp |
| Weight | — | 142 kg |
| Fuel type | petrol | petrol |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
Triumph Speed Twin 5T vs Triumph 500 Grand Prix — which should you buy?
Picking between the Triumph Speed Twin 5T and the Triumph 500 Grand Prix usually comes down to the numbers you care about most. On paper, the Triumph Speed Twin 5T brings 27 hp, while the Triumph 500 Grand Prix counters with 40 hp at 142 kg.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: