Borla 140698 ATAK Cat-Back Exhaust System Fits 11-14 F-150Exhaust System Kit ATAK Cat Back Exhaust System ATAK Cat Back Exhaust System; Dual 2. 5 in. into Muffler Dual 2. 25 in. Out; Incl. Connecting Pipes Mufflers Hardware 4 in. Round Rolled Angle Cut Tips; Single Split Rear Exit; SPECIFICATIONS: Exhaust Type: Dual Exit Position: Split Rear Exit Quantity: Dual Exit Style: Straight Inlet Inside Diameter: 2. 500 in. Material: Stainless Steel Muffler Type: Turbo Outlet Outside Diameter: 2. 250 in. Tail Pipe