Brief TheElectric Engineis also named electric bicycle motor ande-bike motor. TheElectric Engineis a geared, brushless hub motor with DISC brake compatible and up to 7-speed freewheel. The internally geared drive system means the Motor gets more torque in a smaller, lighter package than other hub motors. Motor Spec.:ModelM12180M12060Rated Power(W)250-800250-1000 Rated Voltage(V)24/36/4824/36/48Speed Range(rpm)160-520160-520Efficiency(%)>80>80Noise(dB)<65<65Weight(kg)44Gear Ratio5:15:1UsageFront Hub motor for electric bicycle,golf cart,ATV etc.RearHub motor for electric bicycle,golf cart,ATV etc.