Gibson 11-12 Ford F-150 STX 3.7L 2.5in Cat-Back Dual Split Exhaust - Stainless

If you're looking to give your 2011-2014 Ford F-150 STX with the 3.7L engine a more aggressive sound and a bolder look, this Gibson dual split cat-back exhaust system is a solid choice. It's designed to replace your factory exhaust from the catalytic converter back, featuring 2.5-inch mandrel-bent stainless steel tubing for better flow and durability.

This system uses a baffled and chambered Superflow™ muffler that Gibson says helps reduce backpressure, potentially leading to gains in torque and horsepower, with typical figures around 15-20 horsepower. While it produces a more aggressive, throaty sound, especially noticeable under load, Gibson has worked to minimize interior drone. The dual polished stainless steel slash-cut tips exit straight out the back, fitting with most bumpers, roll pans, and trailer hitches.

Installation is designed to be straightforward with a bolt-on process that doesn't require welding, using factory-style hangers and the included hardware. Gibson backs this exhaust system with a lifetime limited warranty, reflecting their confidence in the stainless steel construction.