Specification:Item Type: Motor Controller KitColor: As Pictures ShownMaterial: Aluminum + CopperWeight: Approx.6850g/241.6ozMotor Parameters:Voltage: 48V DCRated Power: 2000WRated Speed: 4500RPMThrottle Grip Diameter: 22.2mm/0.9inController Box Size: Approx. 15.2x8.5x4.4cm/6.0x3.3x1.7inSprocket: 54 Teeth, Inner Diameter: 5.3cm/2.1in, Diameter: 14cm/5.5inPackage List:1 x Motor 1 x Controller1 x Electric Door Lock2 x Key1 x Accelerator Pedal1 x Gear Lever1 x Manual 1 x Connection Line1 x Junction Box1 x Sprocket1 x Chain1 x Display1 x Pair of Throttle Grip Note:After all the accessories that need to be connected are connected, finally connect the power supply and turn on the power.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.