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The Gibson Dual Extreme cat-back exhaust for 2011–2014 Ford F-150 FX4 3.5L is a stainless bolt-on system that exits behind the rear tires for bold styling and an aggressive sound. Mandrel-bent tubing and a baffled Superflow CFT muffler, finished with a polished slash-cut tip, provide a strong tone with reduced in-cab drone. Dyno-tested results show typical gains of 15–20 horsepower; no welding needed and backed by a lifetime limited warranty.
Gibson 11-14 Ford F-150 FX4 3.5L 2.5in Cat-Back Dual Extreme Exhaust - Stainless
