At the heart of the 1955 NSU Superfox sport motorcycle, NSU relies on a 123 cc (7.5 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 8.8 HP (6.4 kW) at 6,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 71.5 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Superfox measures 116 kg (256 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (13.18 kg per horsepower). The 10.8-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's NSU archive, this model family spans 3 indexed model years from 1955 to 1957, 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.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
