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Gibson cat-back single exhaust for 2004–2008 Ford F-150 FX4 5.4L is a stainless single-side system tuned to improve low-end torque and towing capability while remaining relatively quiet inside the cab. Dyno-tested gains are concentrated in the low RPM band. The kit includes a baffled SuperFlow muffler to minimize interior drone, mandrel-bent stainless tubing, polished slash-cut tips, factory-style hangers and all necessary hardware for straightforward bolt-on installation and a lifetime limited warranty.
Gibson 04-08 Ford F-150 FX4 5.4L 3in Cat-Back Single Exhaust - Stainless
