Left.W/O GT3. Rear. Right.W/O GT3. Strut. w/o 4S. w/o Sport suspensio. A shock absorber is a device that controls the spring oscillations when the vehicle goes over various road irregularities, so the vehicle's tires remain in contact with the road. In some cases, shock absorbers have a secondary function as a suspension limiter to prevent the suspension from either over-extending and/or over-compressing. Cartridge and Base of the Suspension Strut Assembly. Standard Suspension. ABSORBERS. grommet. Suspension Absorber.