Gibson Performance 18815 Cat-Back Single Exhaust System Fits 04-24 4RunnerExhaust System Kit Cat Back Single Exhaust System Cat Back Single Exhaust System; Aluminized; 2. 5 in. Tubing; 2. 5 in. Offset In Outlet; L 24in.; 4 in. Polished T304 Stainless Rolled Slash Cut Tip; Exit Straight Out The Back; SPECIFICATIONS: Exhaust Type: Cat Back Exit Position: Straight Out Back Exit Style: Straight Inlet Inside Diameter: 2. 500 in. Material: Aluminized Muffler Body Length: 24. 000 in. Muffler Type: Chambered Outlet Outside