Borla 140582 S-Type Cat-Back Exhaust System Fits 13-16 M6Exhaust System Kit S Type Cat Back Exhaust System S Type Cat Back Exhaust System; 3 in.; Incl. Connecting Pipes Mufflers Hardware 3. 5 in. Dual Round Rolled Angle Cut Tips; Dual Split Rear Exit; SPECIFICATIONS: Exit Position: Dual Split Rear Exit Style: Straight Inlet Inside Diameter: 3. 000 in. Material: T 304 Stainless Steel Muffler Type: Turbo Outlet Outside Diameter: 3. 000 in. System Type: Cat Back Tail Pipe Diameter: 3. 000 in. Tail Pipe