Gibson Cat-Back Exhaust Systems are constructed from corrosion resistant 2.5 in. stainless steel mandrel bent tubing for optimal exhaust gas flow. Utilizing a chambered design, the Superflow muffler was chosen to provide minimal interior drone without having internal packing to maintain a lightweight design. Adding the finishing touch to your performance exhaust is the 5 in. black ceramic slash-cut exhaust tip, constructed from T304 stainless steel and exiting straight out the back of the vehicle.