Tongsheng TSDZ2B 48V 500W Torque Sensor Mid Motor for 68/73MM Bottom Bracket
TONGSHENG TSDZ2B 48V 500W Electric Bike Mid Drive Motor Torque Sensor Ebike Conversion Kit for BB 68/73mm Bicycle. TSDZ2B Mid-drive Motor Kit. Power: 500W. We will send extra washers and bolts for 73mm bottom bracket;.