TQ Ebike HPR50 Drive Unit Set. TQs Harmonic Pin Ring transmission is a lightweight and extremely compact ebike mid-drive motor. Providing 300w of power and 50nm or torque at 90% efficiency the HPR50 provides quiet assistance feeling more like a regular bike. 250w Continuous rated power. 50nm torque
4.1lbs/1850g
ISIS crank interface 135mm spindle width
TQ Ebike HPR50 Drive Unit Set