1. 24V-36V 150w- 350w type front or rear motor

2. Double-wall alloy rims spoke (2.6mm spokes  spoked by park tool)

3. 24-36V 14A-17A good quality controller

4 .Thrumb throttle or twist throttle

5. 1:1PAS

6.E-brake (power off the electricity)

7.speed 25km/h. Max 33km/h

8. LCD display show the battery capacity