| MODEL | NSU SPORTMAX AND RACING 1954 - 1956 |
| Year | 1954 - 1956 |
| Engine Type | Single cylinder, 4 stroke, OHC |
| Displacement / Capacity | 247 cc / 15 cu in |
| Bore X Stroke | 69 x 66 mm |
| Compression Ratio | 7.4:1 |
| Cooling System | Air cooled |
| Max Power | 20.6 kW / 28 hp |
| Max Torque | — |
| Ignition | Coil |
| Induction | BING 2/26/25 carburettor |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 4 speed |
| Clutch | Multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single-bar stamped plate frame |
| Front Suspension | Leading link |
| Rear Suspension | Telescopic |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 155 kg / 342 lb |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 212 km/h / 131.7 mph |
The Sportmax was a race-tuned Max sold to private riders, with twin exhausts and much more power than the roadster. H.P. Mueller won the 1955 250 cc world title on one, the first private entrant to do so.
