TQ Ebike HPR50 Drive Unit Set

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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 Show more