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The Gibson Single-Side Dual Extreme cat-back exhaust for 2011–2014 Ford F-150 FX4 5.0L is a stainless bolt-on system exiting behind the rear tire that focuses power delivery at low-end RPMs. Dyno testing shows gains concentrated in the 1800–3000 RPM band with average horsepower increases of 10–15 and notable torque improvement. Mandrel-bent tubing, a baffled Superflow CFT muffler and polished tip combine for strong sound with minimal cabin drone; lifetime limited warranty.
Gibson 11-14 Ford F-150 FX4 5.0L 3in/2.5in Cat-Back Dual Extreme Exhaust - Stainless
