SpecificationColor: Black, Silver Material: Aluminium AlloyShape: RoundStyle: ModernVoltage: 48VPower: 1200WMeter Type: LCDPower Type: Lead-acid or Lithium Battery (Not Included)Installation Position: FrontBike Type: Electric BikeMotor Type: Brushless and Gearless 205 Series Hub MotorRated Speed: 500rpmRated Torque: 45nmBraking Method: Disc TypeCorresponding Controller: 48V 1200w ControllerAvailable Wheel Size: 700*32c-42c Instrument Function: Fault Display, Speed Display, Mileage Display, Voltage Display, Five-speed Power Steering, Fixed-speed Cruise ControlEfficiency: ≥82%Motor Wheel Speed: Max 55km/h (180446ft/h) Net Weight: 11.2kg/24.69lbsGross Weight: 13kg/28.66lbsPackage Size: 65*65*23cm/25*25*9inchWheel Diameter: 63.2cm/25inchMotor Shaft Length: 17cm/6.7inchRear Fork Distance: 10cm/4inWheel Size: 700CPackage Included1* Front Motor Wheel1* Turner1* Turnbuckle Cover1* Controller1* LCD Meter1* Brake Handle1 Set* Pedal Assistant Sensors1* Wiring Box6* Tie Stickers1* Controller Bag1* English ManualOther Accessories for AssemblyNotes1. The speed is related to wheel size, road condition, battery condition, guest load, wind Speed, and other factors.2. It is suitable for the front wheel of a two-wheeled bike. It cannot be used for three-wheelers or multi-wheelers.3. Please prepare 4 lead-acid batteries or a lithium battery of corresponding voltage in advance.4. Please make sure a solid connection between the motor and the controller.5. Please make sure that the inner core of each plug is not damaged, broken, or bent.6. If your kit has been in use for a while and then suddenly stops working. It could be that your motor plug is soaked in water. Please unplug it and let it dry. Then put it back in place and it will work fine.7. You need to connect the machine correctly and firmly during installation so that the product can work properly. If there is a mistake during the installation process, the product will not work properly. After the installation is completed, you can check whether the error code is displayed on the LCD screen.8. Please read the manual completely before installation and use, and pay particular attention to the safety instructions included. 9. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering.