Regina 400

1956 Horex Regina 400 Technical Analysis & Specification Breakdown

Positioned in Horex's naked motorcycle lineup, the 1956 Horex Regina 400 utilizes a 400 cc (24.4 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 16.2 HP (11.8 kW) at 5,750 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 40.5 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 Regina 400 measures 150 kg (331 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.26 kg per horsepower). Rider ergonomics and chassis geometry center around a 760 mm (29.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops.

Within MotoLibrary's Horex archive, this model family spans 7 indexed model years from 1950 to 1958, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.