TQ Systems GmbH

HPR50 Drive Unit Set

TQ's 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