Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered for the 2014-2024 RAM 2500/3500 trucks equipped with the 6.4-liter gas engine. Built to upgrade both performance and sound over the factory setup, this complete cat-back kit replaces the restrictive stock piping with free-flowing, mandrel-bent tubing and a proven straight-through muffler. It’s a bolt-on package designed to deliver real, measurable gains while giving your RAM a more aggressive, purposeful presence.
Constructed from durable 409 stainless steel throughout, this system is made to withstand heat, road grime, and the elements for the long haul. The 3.50-inch mandrel-bent pipes maintain a consistent diameter through every bend, promoting better exhaust gas flow for improved efficiency and power delivery.
Performance & Sound
At the heart of the kit is a Flow FX “straight-through” muffler that produces a moderate sound level — noticeably deeper and more assertive than stock, without droning cabin noise on the highway. On the dyno, this system revealed maximum increases of +13 horsepower and +15 lb-ft of torque at the rear wheels, so you feel the difference where it counts. The 24-inch muffler features a center inlet and center outlet with a 3.50-inch outlet diameter, tuned for maximum performance.
Style & Fitment
The system exits out the side, behind the rear wheel, and is finished with a 5.00-inch black ceramic tip with an embossed Flowmaster logo for added style and a custom look. It’s a single tail-pipe configuration that delivers a clean, factory-plus appearance without cutting corners.
Installation is designed to be straightforward and driveway-friendly. The kit uses all existing factory hanger locations and includes installation instructions along with all necessary hardware, making this an easy job you can tackle at home. Because it’s CARB (California) compliant, this cat-back is a smart choice for owners who need to stay emissions-legal.
- Fits 2014-2024 RAM 2500/3500 with the 6.4L engine
- Durable 409 stainless steel construction throughout
- 3.50-inch mandrel-bent pipes for improved exhaust flow
- Flow FX straight-through muffler — moderate, refined tone
- Dyno-proven gains of +13 hp and +15 lb-ft at the rear wheels
- 5.00-inch black ceramic tip with embossed Flowmaster logo, side exit behind the rear wheel
- Uses factory hanger locations; hardware and instructions included
- CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty
Whether you’re towing, hauling, or simply want your RAM to sound and perform better every day, the Flow FX cat-back delivers a balanced blend of power, tone, durability, and easy at-home installation.
