Built around NSU's sport motorcycle platform, the 1955 NSU Sportsmax utilizes a 247 cc (15.1 cu in) oil & air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 28 HP (20.4 kW) at 9,000 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 113.4 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Sportsmax measures 112 kg (247 lbs) dry, translating to a power-to-weight ratio of 0.25 HP/kg (4 kg per horsepower).
Within MotoLibrary's NSU archive, this model family spans 3 indexed model years from 1954 to 1956, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
