NSU 251 OSL vs Bultaco Metralla 250 GT (1976)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the NSU 251 OSLstacks up against the Bultaco Metralla 250 GT. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | NSU 251 OSL | Bultaco Metralla 250 GT |
|---|---|---|
| Model year | 1940 | 1976 |
| Price | — | — |
| Engine | 242 cc | 244 cc |
| Horsepower | 11 hp | 23 hp |
| Weight | 126 kg | — |
| Fuel capacity | — | 3.7 L |
| Fuel type | petrol | petrol |
| Transmission | 4-speed | 5-speed |
| Front brakes | Expanding brake (drum brake) | Expanding brake |
| Rear brakes | Expanding brake (drum brake) | Expanding brake |
| Tires | 3-19 / 3-19 | 3.25-19 / 3.50-18 |
NSU 251 OSL vs Bultaco Metralla 250 GT — which should you buy?
Picking between the NSU 251 OSL and the Bultaco Metralla 250 GT usually comes down to the numbers you care about most. On paper, the NSU 251 OSL brings 11 hp in a 126 kg package, while the Bultaco Metralla 250 GT counters with 23 hp.
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: