Engine:Mode-single cylinder, air-cooled, 4-stroke Bore x stroke: 47 x 41.4mmDisplacement: 71.8mlCompression proportion: 8.8:1 Max. power: 3.7kW/8,000rpm±500rpmRated power: 3.2kW/8,000rpmMax. torque: 4.5N.m/6,000rpm±500rpmMini. empty stable