Comparison of Horex Imperator 1958 and NSU Supermax 1956 [S]ave
| Attribute |  Horex Imperator 1958 × |  NSU Supermax 1956 × |
|---|---|---|
| General | ||
| Production from (year) | 1958 | 1956 |
| Make | Horex | NSU |
| Model | Horex Imperator | NSU Supermax |
| Category | Allround | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor. Bing HD 2/26 |
| Displacement (cm³) | 400 | 247 |
| Power (kw) | 13.8 | 13.1 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | - | 69 |
| Stroke (mm) | - | 66 |
| Gearbox | - | 4-speed |
| Fuel control | Overhead Valves (OHV) | - |
| Clutch | - | Dry multiplate |
| Compression | 7.5:1 | - |
| Chassis | ||
| Rear suspension | - | Swingarm |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Duplex cradle | Steel |
| Front tyre | - | 3.25-19 |
| Rear tyre | - | 3.25-19 |
| Seat | - | Single |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 196 | 174 |
| Power/weight ratio | 0.0704 | 0.0753 |
| Overall height (mm) | 990 | 990 |
| Overall length (mm) | 2,140 | 2,030 |
| Overall width (mm) | 660 | 670 |
| Performance | ||
| Top speed (km/h) | 135 | 126 |
| Fuel capacity (l) | 17 | 14 |
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