125ZB
1954 NSU 125ZB Technical Analysis & Specification Breakdown
Engineered by NSU for the sport motorcycle segment, the 1954 NSU 125ZB features a 123 cc (7.5 cu in) single cylinder, two-stroke configuration. In factory specification, peak output is rated at 5.4 HP (3.9 kW) at 5,300 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 43.9 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 83 km/h (52 mph).
Within MotoLibrary's NSU archive, this model family spans 4 indexed model years from 1951 to 1954, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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