Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered to unlock better performance, a bolder sound, and a custom look for your 2011-2018 GM Silverado/Sierra 1500 equipped with the 6.2-liter engine. Built from durable 409 stainless steel throughout, this complete cat-back system replaces restrictive factory piping with 3.5-inch mandrel-bent tubing that promotes smoother, higher-volume exhaust gas flow from the muffler back.
At the heart of the system is the Flow FX “straight-through” muffler, tuned to deliver a moderate sound level that adds presence without droning inside the cab. On the dyno, this setup produced maximum increases of +16 horsepower and +16 lb-ft of torque at the rear wheels, giving your truck a genuine boost in real-world performance.
Key Benefits
Every component is designed to work together for a factory-quality fit and a straightforward installation. The system exits out the side, behind the rear wheel, and is finished with a 5.00-inch black ceramic tip featuring an embossed logo for added style and a distinctive, custom appearance. Because it mounts using all the existing factory hanger locations, there’s no need for cutting or fabrication.
- Durable 409 stainless steel construction throughout for long-lasting corrosion resistance
- 3.5-inch mandrel-bent pipes for improved exhaust gas flow
- Flow FX straight-through muffler delivering a moderate sound level and maximum performance
- Dyno-verified gains of +16 hp and +16 lb-ft at the rear wheels
- Side-exit design behind the rear wheel with a 5.00-inch black ceramic tip and embossed logo
- Single tail pipe configuration with a center-inlet muffler measuring 24.00 inches overall and a 3.50-inch outlet diameter
Easy At-Home Installation
Flowmaster designed the Flow FX cat-back system for a bolt-on install that you can complete in your own garage. It uses all the existing factory hanger locations and includes installation instructions along with all necessary hardware, so you have everything needed to get the job done right. The silver muffler and silver pipe finish keep the system looking clean under the truck.
Fitment
This cat-back exhaust system is specifically designed for 2011-2018 GM Silverado/Sierra 1500 trucks with the 6.2-liter engine. It is CARB (California) compliant, carries an Emission Code of 5, and comes complete with the Flow FX muffler included in the kit.
Backed by Flowmaster’s Lifetime Limited Warranty, the Flow FX cat-back system is a proven upgrade for owners who want more power, a better sound, and a custom look from a name trusted in performance exhaust. Warning: This product carries a California Proposition 65 warning.
