... e-bike motor, electric bicycle motor. 2.Small size with high torque. 3.High efficiency BriefKeyword: electric bike motor, electric bike conversion kit ... -520Efficiency(%)>80>80Noise(dB)<65<65Weight(kg)44Gear Ratio5:15:1Usage Front Hub motor for electric bicycle,golf cart,ATV ... etc.Rear Hub motor for electric bicycle,golf cart,ATV etc.Features1. ...