Gibson Performance 65405 Cat-Back Dual Extreme Exhaust Fits 11-14 Escalade YukonExhaust System Kit Cat Back Dual Extreme Exhaust Cat Back Dual Extreme Exhaust; Stainless; 3. 5in. 3in. Tubing; 8 in. Rd Body; 3. 5in. Center In 3in. Dual Outlet; L 24 in.; 5 in. Polished Slash Cut Tip; Exit Behind Each Rear Tire; SPECIFICATIONS: Exhaust Type: Cat Back Exit Position: Dual Split Rear Behind Rear Tires Inlet Inside Diameter: 3. 500 in. Material: Stainless Steel Muffler Body Length: 24. 000 in. Tail Pipe Diameter: 3. 000 in. Tip