| Attribute | NSU 251 OSL WH 1941 × | NSU 251 OSL WH 1940 × |
|---|---|---|
| General | ||
| Production from (year) | 1941 | 1940 |
| Make | NSU | NSU |
| Model | NSU 251 OSL WH | NSU 251 OSL WH |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. Amal | Carburettor. Amal |
| Displacement (cm³) | 242 | 242 |
| Power (kw) | 7.7 | 7.7 |
| Cooling system | Air | Air |
| Bore (mm) | 64 | 64 |
| Stroke (mm) | 75 | 75 |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Steel | Steel |
| Front tyre | 3-19 | 3-19 |
| Rear tyre | 3-19 | 3-19 |
| Seat | Single | Single |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 144 | 144 |
| Power/weight ratio | 0.0535 | 0.0535 |
| Overall height (mm) | 950 | 950 |
| Overall length (mm) | 2,040 | 2,040 |
| Overall width (mm) | 780 | 780 |
| Performance | ||
| Top speed (km/h) | 95 | 95 |
| Fuel capacity (l) | 11 | 11 |