Hub Motor:Brushless Non-gear Hub Motor for 48V 3. Wheel Bottom bracket: Rear 135mm-142mm 5. Torque: 55NM for 1OOOW 60NM for 15OOW 6. RPM: 470 for 48V 1OOOW 540 for 48V 15OOW 7. The motor is suitable for thread freewheel, not suitable for cassette.
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