Silent Blocks from a vital part of a suspension system. Apart from this they are also used for articulation & ball joints, steering linkage, radiusarms, angle joints, yokes etc.
Anti-Vibration Dampers are used to absorb vertical shocks & in tandem they recuse wear, tear and also noise.
The Multi Directional movement of the vehicle create comprehensive and tensile stresses, which are all taken by these Silent Blocks.