The Gibson Dual Split cat-back exhaust for 2005–2008 Ford F-150 FX4 5.4L is a stainless system engineered to reduce backpressure and increase torque and horsepower, typically about 15–20 hp. Polished dual tips exit straight out the back and a baffled, chambered muffler keeps interior drone minimal. It includes hardware and factory-style hangers for an easy bolt-on install and is covered by a lifetime limited warranty.
Gibson 05-08 Ford F-150 FX4 5.4L 2.5in Cat-Back Dual Split Exhaust - Stainless