Prima III K
1963 NSU Prima III K Technical Analysis & Specification Breakdown
At the heart of the 1963 NSU Prima III K scooter motorcycle, NSU relies on a 146 cc (8.9 cu in) air-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 7.7 HP (5.6 kW) at 5,200 rpm, transferring power to the rear wheel through shaft drive (cardan) final drive. With a specific output of 52.7 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 84 km/h (52 mph).
Within MotoLibrary's NSU archive, this model family spans 7 indexed model years from 1958 to 1964, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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