This item is for the bike that use 44mm brake rotor, and you need to change the brake
please confirm this before order, thanks a lot.
The kit includes:
1. 1x 450W brush motor with freewheel
2. 1x Chain
3. 1x Customized sprocket & bolts
4. 1x Motor controller
5. 1x Mounting plate + bolts
6. 1x Wuxing thumb throttle (with battery indicator & switch button)
Motor with freewheel & mounting plate:
(with this freehweel, when you step pedal without motor power, the motor will not rotate, so reduce drag)
Note: this kit without battery and battery charger .

This bike kit is suitable for 20"-28"bike
450W 's max. speed :35-40km/h

Promotion of shipment：
We will send by DHL or TNT or UPS or FEDEX.(shipping time about 3-7 working days)
(we send the package to our shipper need 2 working days)
we cann't change the shipping time on amazon system,
so the system shows maybe need long time but that is wrong.we will send it as soon as possible.
If you have any question,please feel freely to contact me.
L-faster