RIGID COLLAR are simple in their shape but clever in their design. Rigid Collars are made from a secret blend of space materials which ensures they mount perfectly flat between the chassis and subframe taking up any imperfection in the mounting surfaces. Rigid Collars cure chassis movement, improve handling, reduce road noise, reduce vibration, improve braking and make the car safer. This is achieved by the collar material, the tapered design and extremely high manufacturing tolerances.