Comparison of NSU 251 SS 1928 and Zündapp Z 300 1929 [S]ave
| Attribute |  Zündapp Z 300 1929 × |  NSU 251 SS 1928 × |
|---|---|---|
| General | ||
| Production from (year) | 1929 | 1928 |
| Make | Zündapp | NSU |
| Model | Zündapp Z 300 | NSU 251 SS |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 298 | 247 |
| Power (kw) | 19 | 7.3 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 68 | 63 |
| Stroke (mm) | 82.5 | 80 |
| Gearbox | - | 3-speed |
| Fuel control | Overhead Valves (OHV) | - |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 2.85-26 | 2.50-26 |
| Rear tyre | 2.85-26 | 2.50-26 |
| Seat | Single ( two single seats optional) | Single |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 105 | 110 |
| Power/weight ratio | 0.181 | 0.0664 |
| Performance | ||
| Top speed (km/h) | 90 | 100 |
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