Feature: 1. 48V 2000W Brushless Motor: Aluminum body, copper coil, heat resistance, natural air cooling, low noise. 2. Motor Parameters: Voltage 48V, maximum power 2000W, rated speed 4500rpm/min, with T8F 11 tooth sprocket. 3. Durable Material: Electric brushless DC motor is made of aluminum and copper, which is durable and has a long service life. 4. Product Package: Includes motor, controller, manual, a pair of throttle grip and accelerator pedal, electric door lock, key, gear lever, connecting wire, junction box, sprocket, chain, display. 5. Applicable Models: Suitable for DIY karts, scooters, electric bicycles, ATVs, motor bicycles, mopeds, electric off road vehicles, tricycles, DIY engine systems. Specification: Item Type: Motor Controller Kit Color: As Pictures Shown Material: Aluminum + Copper Weight: Approx.6850g/241.6oz Motor Parameters: Voltage: 48V DC Rated Power: 2000W Rated Speed: 4500RPM Throttle Grip Diameter: 22.2mm/0.9in Controller Box Size: Approx. 15.2x8.5x4.4cm/6.0x3.3x1.7in Sprocket: 54 Teeth, Inner Diameter: 5.3cm/2.1in, Diameter: 14cm/5.5in. Package 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.