48V 1000W about 45-55km/h, 48V 1500W about 50-60km/h, (different wheel size, road&weather condition and rider’s weight will have different speed) 2. Rim: Double-wall Aluminium Alloy Rim 3. Wheel Bottom bracket: Rear 135mm-142mm. Hub motor : 48V 1500W Brushless Non-gear Hub Motor 540RPM 45NM 48V 1000W Brushless Non-gear Hub Motor 470RPM 35NM Controller : 18 Mosfet Dual mode Controller 45A+-1A Max Current for 1500W 12 Mosfet Dual mode Controller 30A+-1A Max Current for 1000W Brake levers : Power cut-off Function Non-slip Aluminum Alloy Brake levers Throttle:Half Twist Throttle Display : 24/36/48V LCD3 Display, Support DIY Setting PAS : 8 Magnets Pedal Assistant Sensor Freewheel : 7 Speed Thread Freewheel Disc : 160mm Disc. There is no battery include 1 Rear Motor wheel(26/27.5/29inch) 1 Tire 1 7 speed Freewheel 1 160mm Disc brake Rotor 1 DC Controller 1 Controller Bag 1 pair Wuxing Power cut-off Brake lever 1 Display LCD3 1 8 Magnet Pedal Assistant Sensor 1 set Twist Throttle.