7 speed change motor with disc-brake

Specifications 1. 24V,36V,48V 180-250W

2. High torque,light weight

3. Powerful to climb

4. CE,CCC certificate

  Features of this product: Energy-saving and protactive for the battery Low noise and soft start-up High effeciency and long riding distance    Parameters of this Product:

Rated Voltage (V)	24/36/48	Cable Location	left
Rated Power (W)	180-250	Spoke Specification	12g/13g
Wheel Size	8''--28''	Hall Sensor	Optional
Rated Speed (km/h)	25+/-1	Speed sense inside	Optional
Rated Efficiency (%)	>=82	Surface	Silver /Black painted
Reduction Ratio	1:4.4	Brake Type	Disk brake
Weight (Kg)	2.5-3	Salt fog test (h)	24/96
Open Size (mm)	Optional	Noise (db)	< 60
Drive	Rear	Waterproof Grade	IP54