Notice: <br>- Battery and Charger are Not Included.<br>- Battery Recommendation: Electro kinetic cell battery featured in nominal voltage 48v, nominal capacity 17-20Ah is compatible with the motor.<br>- Must to wear a helmet before riding this electric bicycle for protection.<br>- Please go to those automobile repair shop with standard business license for modification.<br>- If you have any question about the compatible Model, please contact our Customer Service before purchasing.<br>- For safety reasons, it is not recommended to use in rainy days<br>- It is only applicable to conventional bicycles, not tricycles, tractors, etc;<br>- Suitable battery type and parameters: 48V, 17-20 Ah, travel about 40km;<br><br>Specification:<br>- Overall Dimension: 25 13/16" x 1 9/16" (65.5 x 4 cm)<br>- Axle Length: 7 11/16" (19.5 cm)<br>- Rear Dropout Spacing: 5 5/16" (13.5 cm)<br>- Spokes Length: 6 5/16" (16 cm)<br>- Controller Size: 8 1/4" x 3 3/8" x 1 3/4" (21 x 8.5 x 4.5 cm)<br>- The Number of Spokes: 36<br>- Controller Power: 1000W<br>- Motor Power: 1000W<br>- Motor Voltage: 48V<br>- Motor Rotating Speed: 470 RPM<br>- Motor Torque: 40 to 45 N.m<br>- High Motor Efficiency: more than 85%<br>- Net weight: 24.71 Lbs (11.21 kg)<br><br>Package Content:<br>- 1x 26" Rear Wheel with Brushless Hub Motor<br>- 1x Battery Connection Cable<br>- 1x Electric Controller<br>- 2x Hand Brakes<br>- 2x Handle Grips<br>- 1x Thumb Throttle<br>- 1x Controller Bag<br>- 1x Set of Winding Pipe and Cable Tie<br>- 2x Terminal Boxes<br>- 1x Manual