Types of suspension shock absorbers

All Suspension Shock Absorber have a main function: to correctly control the vertical movement of a vehicle over road surfaces. Because every manufacturer has different requirements for building their vehicles, there are different ways in which a shock absorber can operate.
Conventional telescopic shock absorbers have a simple structure and can be found on both front and rear suspension systems. The general rule of thumb with these is to replace them when worn rather than repair them.
Strut type shock absorbers replace part of the suspension system and must be built more ruggedly to deal with greater road forces. Used mostly in medium sized passenger vehicles, this absorber type can either be sealed or be repairable. Sealed units are usually found in the suspension systems in luxury cars while the repairable units dubbed as McPherson struts have replaceable strut cartridges.
Spring seat shocks combine qualities of both telescopic and strut type shock absorbers. A spring seat shock is a suspension unit and damping device in a single system. Unlike struts, these are not designed to be subjected to high side loads or weights. In addition, these Motorcycle Front Shock Absorber are also fully sealed and have no option for repair.