aw 26"x1.75" rear wheel 48v 1000w electric bicycle motor kit e-bike cycling hub conversion dual mode controller aw 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