| MODEL | NSU 250 RENNMAX & 250 TWIN 1954 |
| Year | 1954 |
| Engine Type | Two-cylinder, 4-stroke, double overhead camshaft driven by shafts and bevel gears |
| Displacement / Capacity | 249.3 cc |
| Bore X Stroke | 55.9 mm x 50.8 mm |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | 29.1 kW / 39 hp @ 11500 rpm |
| Max Torque | — |
| Ignition | Coil and distributor |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed, unit construction |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single stamped-plate bar frame, engine suspended |
| Front Suspension | Swinging-link (twin: leading link) |
| Rear Suspension | Telescopic (twin: pivoting fork) |
| Front Brakes | Central drum, double cam |
| Rear Brakes | Central drum, double cam |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 217 km/h / 135 mph (with bell fairing) |
NSU's 250 cc Grand Prix racer, a two-cylinder four-stroke descended from the prewar supercharged 500. For 1954 it was reworked with a revised valve train, a sixth gear and new bore and stroke, and Werner Haas won the Lightweight TT and his second world title on it.
