Gibson Performance 316005 Cat-Back Dual Split Exhaust System Fits 07-09 NitroExhaust System Kit Cat Back Dual Split Exhaust System Cat Back Dual Split Exhaust System; Aluminized; 2. 25in. Tubing; 4x9x18in. Oval Body; 2. 5 in. Center In 2. 25 in. Dual Outlet; 3. 5in. Slash Cut Tip; Exit Straight Out Back; SPECIFICATIONS: Exhaust Type: Dual Exit Position: Split Rear Exit Style: Straight Inlet Inside Diameter: 2. 500 in. Material: Aluminized Muffler Body Length: 18. 000 in. Muffler Type: Chambered Outlet Outside Diameter: 2. 500