This Borla Cat-Back Exhaust for the ?original hot hatch? is a high-performance single muffler system with patented technology that offers more power when you want it, improved fuel economy when you need it. Superior-quality T-304 stainless steel is high on looks and durability yet low on weight, for more spirited driving. Add the Borla ?sound of power? and aggressive dual 4? polished T-304 stainless steel exhaust tips, and the result is a whole new driving experience. From the design characteristics of the inner cores to the amount of sound-absorbing composite filament, all specifications of Borla exhaust systems are tuned on a vehicle-by-vehicle basis for an optimum blend of performance and sound. Combined with an unrivalled Million-Mile Warranty, distinctive motorsport styling and easy bolt-on installation, the world?s most winning exhaust continues to lead the industry it founded over 40 years ago.