Complete e-bike rear hub conversion kit featuring a powerful 2000W 52V motor with 27.5 inch wheel. Includes UKC1 LCD display, 45A three-mode sine wave controller, pedal assist sensor (PAS), WuXing brake levers, 20X whole twist throttle, controller box, and 7-speed freewheel. Battery not included - requires 52V battery with 50A+ protection board.