特長Motor: DC brushless geared motor: Integrated Bottom Bracket (B.B) / Built in Speed Sensor (Built-in Pedal Assist System) / Crankshaft Integrated : Engages the motor when the rider starts pedaling and disengages when they stop. Max-Torque: 54.4Nm (with decelerator) High torque Crank Drive Motor: This type puts power through the rear gear system and can be fine-tuned to suit almost any environment. Other strengths: Great weight distribution: no heavy weight in your wheels, more efficient especially when climbing, and gives you a lighter better balanced e-bike. Compact & Durable design : High power performance but maintenance free and easy repair as well. Water Resistance with oil seal. / Good Elimination for Heat.