Gibson Performance 9522 Cat-Back Dual Extreme Exhaust Fits Expedition NavigatorExhaust System Kit Cat Back Dual Extreme Exhaust Cat Back Dual Extreme Exhaust; Aluminized; 2. 5in. Tubing; 8in. Rd Body; 2. 5in. Dual In 3 in. Offset Outlet; L 24in.; 3. 5in. Slash Cut Tip; Exit Behind Each Rear Tire; SPECIFICATIONS: Exhaust Type: Dual Exit Style: Straight Inlet Inside Diameter: 2. 500 in. Material: Aluminized Muffler Body Length: 24. 000 in. Muffler Type: Chambered Outlet Outside Diameter: 3. 000 in. System Type: Cat Back Tail Pipe