Sway Bar mount bushes are an important part of the whole sway bar system. Worn or rubber bushes in these locations lead to movement in the sway bar in unwanted directions that effect the effectiveness of the sway bar. An upgrade to SuperPro bushings can return lost sway bar performance and improve handling. Fits: 996 & 997 911 models and 986 Boxster modelswith24.5mm front sway bar