Classification of shock absorbers: There are many types of shock absorbers. Most motorcycles use cylindrical shock absorbers, and only a few use leaf spring structures. There are many types and varieties of cylindrical shock absorbers, which are generally divided into front shock absorbers and rear shock absorbers according to the installation position.

1. In the direction of attenuation force: there are one-way shock absorbers and two-way shock absorbers.

2. Load adjustment type: spring initial pressure adjustment type, air spring type, installation angle adjustment type.

3. According to the structure, there are telescopic tube type front * hydraulic shock absorber (which is the most used front shock absorber in motorcycles at present), rocker arm type shock absorber, rocker arm lever vertical central shock absorber, and rocker arm lever inclined central shock absorber.

4. According to the working position of the oil cylinder, there are inverted shock absorbers (that is, the oil cylinder is above and the piston rod is below) and positive shock absorbers (the oil cylinder is below and the piston rod is above).

5. According to the working medium: there are spring shock absorbers, spring air damping shock absorbers (because of the limited damping force of air, the damping effect is not ideal, and generally only used as rear shock absorbers for mopeds with low speed), hydraulic damping shock absorbers, oil air combined front * shock absorbers, and nitrogen filled hydraulic shock absorbers.