A good suspension system must provide both spring force and damping, so that the vehicle feels both stable and comfortable to drive. In order to achieve this, each vehicle is fitted with suspension (coil spring suspension, leaf suspension or torsion bar suspension) and shock absorbers. The suspension under the vehicle ensures that passengers and/or the cargo do not feel every bump in the road surface.

The shock absorbers damp the movement of the suspension; without shock absorbers the vehicle would continue to pitch and roll. Perhaps the most important function of the shock absorbers is to ensure that the wheels remain in contact with the surface of the road. This is very important for the driveability and handling of the vehicle, and thus for its safety.

With standard shock absorbers, you usually have to make a choice between stability and comfort. If you go for more stability, the vehicle will feel more stable, but will not provide as much comfort. If you go for comfort, the vehicle will be comfortable to drive, but will not feel as stable. Clearly, it's best to have both and now you can with VB-FSD shock absorbers.