SP-55 series

The single cylinder engine of the SP-55 series is designed with twin spark plugs and can be equipped with a carburetor or a fuel injection. The rear output shaft and the position of the carburetor or the fuel injection on the side, make this engine to one of the most compact 1-cylinder engines on the market. Because of the rear output shaft, a generator can be mounted on the back of the engine. All engines are equipped with the ignition HKZ215 and the ECU030.


    • SP-55 TS
    • SP-55 FI TS ROS
    • SP-55 HF FI TS ROS (coming soon)
    • SP-55 FI TS ROS range extender for multicopter (coming soon)

> TS – Twin Spark, FI – Fuel Injection, HF – Heavy Fuel, ROS – Rear output shaft

General series specifications range

Type 1-Cylinder Gas-Engine
Capacity 55 ccm / 3.35 cu in
Power 4.18 HP / 3.1 KW
Speed Range 2000 - 10000 RPM (depending on version)
Weight 4.55 lbs (2.06 kg)
Crankshaft 4 ball bearings
Oil/Gasoline ratio 1:50 / 2% mix
Operating Voltage 6 - 48 V DC (depending on version)

Test method: Dynotest – Engine data might change due to the engine test procedure and the engine configuration.