... logical, more energy-saving 3.Approval:EN15194 1. Crank Shaft Electric Bicycle with Own Exclusive Patent2. More Beautiful, more logical, more energy ... without interfering with each other, which makes the structure of electric motor more compact7. High quality and most competitive price, ... high-quality after services8. Motor: CRANK SHAFT MOTOR,150W-250W high speed brushlessless motor with gear