What is the diameter of motorcycle handlebar?

For ordinary motorcycles, the inner diameter of handlebar steel tube is generally between17-18 mm.

Functions of motorcycle steering wheel:

The steering wheel is connected with the front suspension system through bolts, which can balance and steer the vehicle, thus changing the driving direction. The right brake handle seat, front brake handle and front brake light switch, throttle controller and headlight switch are installed on the right side of the steering wheel handle. There are left brake handle seat, clutch handle, light switch, dimmer switch, horn switch, etc. Operate and control all parts of the motorcycle. However, JH 125 and JH 145 motorcycle headlamp switches are located on the left brake handle.

Function of motorcycle throttle knob:

Throttle knob is also called throttle control knob for short. It is located on the right side of the steering handle, tied in the seats of the steering handle and the right brake handle, and connected with the throttle valve of the carburetor through the throttle cable (throttle cable, throttle cable and throttle cable). Turn the throttle knob to make the plunger in the carburetor rise, that is, control the throttle and change the amount of combustible mixture entering the cylinder, thus changing the engine speed and the running speed of the motorcycle.