New version 52V 750W Conversion ebike Kit Motor, Torque Sensor Electric Bike Engine EBBS02. BB size : 68-73mm Construction: Gear Drive Rated Voltage (DCV): 52V Rated Power (W): 750W Speed (Kph): 40kph Max Torque: 90N. M Pedal Sensor:Torque Sensor Integrated Weight: 4.0kg Noise Grade. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Electric Bicycle Components".The seller is "auto-ebike" and is located in this country: CN. This item can be shipped worldwide.