GEN 125

The GEN 125 is a Japanese aircraft engine, designed and produced by the GEN Corporation for use in ultralight helicopters.[1]

GEN 125
Type Aircraft engine
National origin Japan
Manufacturer GEN Corporation
Major applications GEN H-4

Design and developmentEdit

The engine is a twin cylinder two-stroke, horizontally-opposed, air-cooled, 124 cc (7.6 cu in), direct-drive, gasoline engine design. It employs capacitor discharge ignition and produces 8 hp (6 kW) at 8500 rpm. The engine weighs 3 kg (6.6 lb).[1]

The engine was designed specifically for the GEN H-4 helicopter, in which four of the engines are mounted to provide redundancy.[1]


GEN 125
Base model producing 8 hp (6 kW)[1]
GEN 125-F
Model producing 10 hp (7 kW)[1]


Specifications (GEN 125)Edit

Data from World Directory of Leisure Aviation 2011-12[1]

General characteristics

  • Type: Twin cylinder, two stroke aircraft engine
  • Displacement: 124 cc (7.6 cu in)
  • Dry weight: 3 kg (6.6 lb)


  • Fuel type: gasoline
  • Cooling system: liquid or air


  • Power output: 8 hp (6 kW) at 8500 rpm

See alsoEdit

Related lists


  1. ^ a b c d e f Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, pages 191 and 238-239. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X

External linksEdit