2009-2014 F150 V8 Flowmaster American Thunder Cat-Back (Stainless) 817567

Big, Aggressive Exhaust Tone

The Flowmaster American Thunder series of cat-back exhausts have long been the go-to systems when it comes to getting an aggressive sound out of powerful engines, and the kit for the 2009 to 2014 F150s with 4.6L, 5.4L, or Coyote 5.0L engines is no different. This awesome F150 cat-back system adds a massive new roar onto your truck and features an OEM-style side exit design with an oversized exhaust tip for a whole new look. The American Thunder Cat-Back comes with a high-performance muffler and more efficient tubing than stock to give your truck a deep growl and improved performance.

Includes New Muffler, Tailpipe, and Tip

Each American Thunder kit features an aggressively loud and throaty muffler paired with a new tailpipe. The muffler included in this kit is one of Flowmaster's 50 Series HD systems that uses a three-chamber internal design with Flowmaster's Delta Flow sound tuning to produce a big, awesome roar without sacrificing power. Each tailpipe is made from 16-gauge, 3.5" diameter, mandrel-bent tubing that maintains excellent and efficient outflow for some performance gains. The kit comes standard with a 4" polished tip embossed with the Flowmaster logo. The whole kit is made from 409S stainless steel right here in the USA and comes backed by a Limited Lifetime Warranty.

This cat-back exhaust kit deletes your factory resonator for a more aggressive tone.