The suspension is a complex assembly, including the following main elements: springs (or torsion bar), tyres and shocks. But also: suspension arms, triangles, swivels, mounting kits, bonded bushes, stabilizer rods,

These different elements, parts of the suspension, are recognized efficient when there is:

• An absorption of the road roughness,
• A constant contact between the wheels and the ground,
• An optimal passenger comfort.

The shock absorber, in order to relieve the other suspension parts, has several functions:

• Road holding
• Comfort
• Safety
• Protection of the mechanical parts
• Quality of the tyre grip