Gibson Performance 5558 Cat-Back Dual Split Exhaust SystemExhaust System Kit Cat Back Dual Split Exhaust System Cat Back Dual Split Exhaust System; Aluminized; 2. 5 in. Tubing; 8 in. Round Body; 3 in. Dual In 2. 5in. Dual Outlet; L 24 in.; 3. 5 in. Pol. Slash Cut Tip; Exit Straight Back; SPECIFICATIONS: Exhaust Type: Dual Exit Position: Split Rear Exit Style: Straight Inlet Inside Diameter: 3. 000 in. Material: Aluminized Muffler Body Length: 24. 000 in. Muffler Type: Chambered Outlet Outside Diameter: 2.