Gibson Performance 317007 Cat-Back Dual Split Exhaust System Fits ChallengerExhaust System Kit Cat Back Dual Split Exhaust System Cat Back Dual Split Exhaust System; Aluminized; 2. 5in. Tubing; 4x9x13in. Oval Body; Uses Factory Exhaust Tip; Exit Straight Out Back; SPECIFICATIONS: Exhaust Type: Dual Exit Position: Dual Split Rear Exit Style: Straight Inlet Inside Diameter: 2. 500 in. Material: Aluminized Muffler Body Length: 13. 000 in. Muffler Type: Chambered Outlet Outside Diameter: 2. 500 in. System Type: Cat Back Tail Pipe