The suspension sytem, or suspension as it is often shortened to, is a set of components which exists for both performance improvements and driver comfort. Different makes and models of vehicles have different suspension layouts, but the basic idea of every one of them is to allow the wheels to move somewhat freely from the chassis, while at the same time preventing itself from sagging, and to keep all wheels pressed to the ground as much as possible.
- Strut Assembly Mount
- Coil Spring
- Strut Protective Casing
- Shock Absorber/Strut
- Anti-Roll Bar Mounting Brackets
- Anti-Roll Bar Bushings
- Strut Bolts (2)
- Control Arm Bolts (4)
- Control Arm
- Wheel Hub Assembly
- Hub Studs (5)
- Lower A-Arm
- A-Arm Bolts (2)
- Strut Assembly Mount Nuts (3)
- Strut Bolt Nuts (2)
A List of Suspension Components
The suspension components above are from a refurbished Delorean DMC-12. You can see the coil spring with the coil-over shocks (shock absorbers) inside. The brake disc with the gold brake components are part of the unsprung weight.
Pictured below is the point where the suspension is mounted to the chassis. Usually there are three bolt points, with a bushing showing in the center.
There are a few vehicles that don't have a suspension system. Many go-karts (including racing karts) have axels and steering systems which are bolted right to the chassis. Many of the earliest cars didn't have any notable suspension because they didn't go fast enough to need is, and it would have been expensive.