Sky Power International - SP-55 FI TS ROS


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

  • Generator and Controller
  • Starter Generator and Controller

The Detail


• Type: 1-Cylinder gas engine

• Capacity: 55 ccm / 3.35 cu in

• Power: 4.1 HP / 3.0 KW @ 7000 RPM

• Speed Range: 2200 – 8000 RPM

• Weight: 6.08 lbs (2.76kg)

• Crankshaft: 4 ball bearings

• Oil/Gasoline Ration: 1:50 / 2% mix

• Operating Voltage: 12-15 V DC

• Bore Diameter: 1.77 inch (36mm)

• Stroke: 1.38 inch (28mm)

• Torque: 4.8 Nm @ 5500 RPM