Mirabell 125
1957 KTM Mirabell 125 Technical Analysis & Specification Breakdown
Built around KTM's scooter motorcycle platform, the 1957 KTM Mirabell 125 features a 124 cc (7.6 cu in) single cylinder, two-stroke configuration. In factory specification, peak output is rated at 7 HP (5.1 kW) at 4,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 56.5 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Mirabell 125 measures 125 kg (276 lbs) dry, translating to a power-to-weight ratio of 0.06 HP/kg (17.86 kg per horsepower).
Within MotoLibrary's KTM archive, this model family spans 5 indexed model years from 1956 to 1960, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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