减振器(Vibration Damper) ，减振器主要用来抑制弹簧吸震后反弹时的震荡及来自路面的冲击。在经过不平路面时，虽然吸震弹簧可以过滤路面的震动，但弹簧自身还会有往复运动，而减振器就是用来抑制这种弹簧跳跃的。减振器太软，车身就会上下跳跃，减振器太硬就会带来太大的阻力，妨碍弹簧 正常工作。在关于悬挂系统的改装过程中，硬的减振器要与硬的弹簧相搭配，而弹簧的硬度又与车重息息相关，因此较重的车一般采用较硬的减振器。
shock absorber (Vibration Damper), shock absorber is mainly used to suppress the spring after the shock absorption of shock and shock from the road. In the uneven road surface, although the shock absorption spring can filter the vibration of the road, but the spring itself will have reciprocating motion, and the shock absorber is used to suppress the spring jump. Shock absorber is too soft, the body will jump up and down, shock absorber too hard will bring too much resistance, hinder the normal work of the spring. In the modified process on the suspension system, shock absorber hard to collocation with hard spring, and the spring stiffness and weight are closely related, so the heavier vehicles generally use the shock absorber hard.