The cat-back system consists of a connecting pipe, centre silencer, left-hand and right-hand rear silencers, and dual 100mm (4") tailpipes. The larger-than-standard tailpipes fit the cutouts in the rear bumper more closely and enhance the look of the rear of the car whilst remaining true to the original design. It's classic Milltek - genuine performance enhancement, sounds that are truly awesome, looks that are subtle but sexy and a feeling of true exhilaration.