For 27.5 Inch wheel with a width between 1.75 to 2.25 Inch Torque: 80.8 N.M Wiring Method: Waterproof Wire Connection System Maximum Speed: 65 - 69 km/h Display: Intelligent Coloured LCD Panel Display Controller: Intelligent Motor Controller, the Current is 40A Riding mode: Twist Throttle Electric Assist Mode, Pedal Assist Mode Rear Fork Width Requirement:135 - 142mm Suitable for Disk Brake (6 Holes to Mount the Disc Rotor) and V-brake System Brake levers: Aluminum Alloy Wuxing E-brake Lever Rim & Spokes: Alloy Double Wall Rim, Steel Spokes PAS Sensor: 12 Magnets Pedal Assist Sensor Freewheel: Shimano TZ500 7 Speed Thread-on Freewheel 12 Months Replacement Warranty on the Motor & Battery 52V 20.8AH Triangle (LG Cell) Battery with case Riding Range: Up to 80km range with Pedal Assist Mode Package Include : 1x 52V 2000W Rear Rim Motor 1x Intelligent Motor Controller 1x Controller Box 1x Pedal Assist Crank Sensor 1x Pair of E-Brake Levers 1x Twist Throttle 1x LCD Display 1x Cable Ties Set 1x Manual 1x 7 Speed Freewheel 1 x 52V 20.8AH Battery & Charger Set Important Notes A pair of torque arms is highly recommended but is not included with this product. Please check your wheel size before purchasing and you can find your wheel size from the printed on the tire wall (side). Please check your rear fork width (135 - 142mm) to make the motor hub can be fitted into it. Professional installation skills are needed. Please notice that basic tools will be required when installing this DIY Kit. Otherwise, please seek a local mechanic for installation. The AU regulations dictate that a kit must not exceed the rated power of 250W to be road-legal. 2000W Motor is not path legal, this product is recommended for off-road or private property use only. Please noted that the rear motor hub will only suit thread-on freewheel which is up to 7 Speeds, the freewheel is included. Speed limit and riding ranges depend on the rider's weight, road, and weather conditions.