Key Features User-friendly Features: According to different road conditions and personal needs, it allows 5-gear speed adjustment. At the same time, when the riding speed is maintained, pressing the button key for 2-3 seconds will enter the cruise function, making the riding process easier! Powerful Motor: With a 1000w brushless gearless motor, it can reach a maximum speed of 45-55KM/H. Compared to brush motors, it allows for smooth, fast acceleration and low noise operation without replacing the brush, thus making maintenance easier. Safe and Reliable: The brake lever can cut off the power supply of the motor in case of emergency braking, so that the bicycle can stop in time. Dual Mode Controller: The motor works under Hall effect and non-Hall effect. If the component fails, the controller will switch to non-Hall effect mode and the motor will continue to work. Robust and Durable: The aluminum alloy wheel frame is very durable, stable, rust-proof and wear-resistant, ensuring strong load-bearing capacity, up to 264lbs. Application It is suitable for assembling and converting the 28-inch, 29-inch, and 700C rear wheel of a bicycle. It is compatible with universal disc brakes and V-shaped brakes. Specifications Material: Aluminum Alloy Color: Black Suspension Type: Rear Special Feature: Electric Assembly Requirement: Yes Brake Type: Power-off Brake Lever (Applicable to V Brake, Disc Brake) Motor Type: Brushless Gearless Motor Gear Adjustment: 5 Gears Recommended Battery: 48V 13AH or Higher Capacity Battery(Not Included) Output Voltage: 48V Power: 1000W Minimum Flat Fork Distance: 100mm/3.94in Speed: 45-55km/h   Display Size: 6.8*9.6cm/2.67*3.77in Packing Size: 65*65*22cm/25.59*25.59*8.66in Suitable Wheel Diameter: 28-inch, 29-inch, 700C Gross Weight: 11kg/24.25lbs Net Weight: 10kg/22lbs Loading Capacity: 120kg/264lbs Package Included 1* Motor Wheel 1* Display 2* Brake Levers 1* Controller 1* Thumb Knob Handle 1* Controller Bag 1* Pedal Assist Sensor 1 * Motor Cord 1 * Winding Pipe 1* English Instruction Manual All Accessories for Assembly Notes 1.While connecting the controller to the wires, please make sure that you connect the right colors to the controller. 2.This kit does not include tires, batteries and chargers. Please check the product size and practical voltage before purchasing. 3.It is suitable for the rear wheel of a two-wheeled bike. It cannot be used for three-wheelers or multi-wheelers. 4.Please note that the motor can use hydraulic disc brake and wire disc brake, but the brake handle provided is wire disc brake.