48v Electronic bicycle coversion kit  E-Bike conversion kit 500w/700w/1000w/1200w
36V 350W / 500W
MODEL NO: 
48v 500w Brushless direct drive CNEBIKES hub motor
48v 500w intelligent controller
Triangle bag for controller
High power aluminium alloy rim 16inch – 28inch
Thumb throttle or twist throttle
2 alloy WUXING brake levers
1:1 pedal assist sensor
Hand grip
Cable ties
Instruction manual
Descripttion:
Max speed: 35-40kph/ 22-24.8mph
Torque:
Motor weight: 6 kgs
Loading: 135 kgs.  
Optional:disc brake, 5-7 gears SHIMANO freewheel for rear wheel, headlight, rear light, some tools for installing