1--Voltage: 36V-48V 250W-800W

2--Brake type: Rim brake,V-brake and disc brake are compatible

3--Connector: 9Pins waterproof plug

4--A speed sensor inside the motor.

5--Fork size: Rear-135mm;Front motor:100mm

6--Weight: 250W-2.1kg;350-2.2KG,500W-2.8KG;800W-2.8KG

8--Motor cable and Screws are included.

9--Black Color, 13G 36holes,36V250W CST have 32holes option.

10--Freewheel:Flywheel Motor--6speed,7speed;CST Motor:8speed,9speed,10speed Cassette freewheel

11.RPM:201,328

201 is lower speed, higher torque,suitable for hill

328 is lower torque,higher speed, suitable for Smooth road

For 16inch,20inch,24inch,26inch,27.5inch,28inch and 700C Wheel Rim

36V350W Rear Motor and CST 48V500W motor have RPM:260,leave a message if you need it when you make a order.