Electric Bikes for Adults 48V, 1000W Motor 28MPH Carbon Fibre Ebike with Thumb Throttle, 26" Fat Tire Ebike Mountain E-Bike Shimano 8-Speed Color LCD Display UL Certified. POWERFUL 1000W MOTOR-- This adult electric bike is equipped with a 1000W high-speed brushless motor, which provides strong power with the max speed of 28mph, producing 80Nm of torque.