Gibson Performance 65008 Cat-Back Dual Extreme ExhaustExhaust System Kit Cat Back Dual Extreme Exhaust Cat Back Dual Extreme Exhaust; Stainless; 2. 5in. Tubing; 8in. Round Body; 2. 5in. Dual In 3in. Dual Outlet; L 24in.; 3. 5in. Polished Slash Cut Tip; Exit Behind Each Rear Tire; SPECIFICATIONS: Exhaust Type: Cat Back Exit Position: Dual Split Rear Behind Rear Tires Inlet Inside Diameter: 2. 500 in. Material: Stainless Steel Muffler Body Length: 24. 000 in. Tail Pipe Diameter: 2. 500 in. Tip Diameter: 3.