Norton 650SS vs AJS Model 31 650 Swift (1967)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Norton 650SSstacks up against the AJS Model 31 650 Swift. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Norton 650SS | AJS Model 31 650 Swift |
|---|---|---|
| Model year | 1967 | 1966 |
| Price | — | — |
| Engine | 646 cc | 646 cc |
| Horsepower | 52 hp | 31 hp |
| Weight | — | 176 kg |
| Fuel capacity | — | 4.2 L |
| Fuel type | petrol | petrol |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
Norton 650SS vs AJS Model 31 650 Swift — which should you buy?
Picking between the Norton 650SS and the AJS Model 31 650 Swift usually comes down to the numbers you care about most. On paper, the Norton 650SS brings 52 hp, while the AJS Model 31 650 Swift counters with 31 hp at 176 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: