Gibson Performance 9016 Cat-Back Dual Extreme Exhaust Fits 11-14 F-150Exhaust System Kit Cat Back Dual Extreme Exhaust Cat Back Dual Extreme Exhaust; Aluminized; 3in. 2. 5in. Tubing; 3in. Center In 2. 5 in. Dual Outlet; L 19in.; 3. 5in. Polished Slash Cut Tip; Exit Behind Rear Tires; SPECIFICATIONS: Exhaust Type: Dual Exit Position: Dual Split Rear Behind Rear Tires Exit Style: Straight Inlet Inside Diameter: 3. 000 in. Material: Aluminized Muffler Body Length: 19. 000 in. Muffler Type: Chambered Outlet Outside