Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered for 2014-2024 Ram 2500 trucks equipped with the 6.4L engine and coil spring rear suspension. Designed for the driver who wants a moderately aggressive interior tone paired with an aggressive exterior sound level, this bolt-on system delivers the performance breathing improvements you expect from the American Thunder series while remaining emissions-legal and CARB (California) compliant.
At the heart of the system is a stainless steel 50 Series HD muffler featuring large 4.00-inch internals for a full, powerful sound and reduced restriction. The muffler carries a black finish, while the mandrel-bent dual 3.00-inch stainless steel tailpipes flow freely to maximize performance. Everything is finished off with a pair of large 4.00-inch polished stainless steel tips wearing an embossed Flowmaster logo.
Key Benefits
This 3.50-inch inlet, dual tailpipe design pairs aggressive sound with genuine flow gains. The silver-finished piping and mandrel bends keep exhaust gases moving efficiently, and the flanged mount type makes installation straightforward. Because it’s a complete cat-back kit, you receive the muffler, tailpipes, tips, hardware, and easy-to-follow installation instructions in one package.
- Stainless steel 50 Series HD muffler with large 4.00-inch internals
- Dual 3.00-inch mandrel-bent stainless steel tailpipes for reduced restriction
- Large 4.00-inch polished stainless steel tips with embossed Flowmaster logo
- 3.50-inch inlet diameter with flanged mounting
- Moderately aggressive interior and aggressive exterior sound levels
- Emissions-legal and CARB (California) compliant
- Covered by a Lifetime Limited Warranty
Exit Options
Flexibility is built in. The kit offers two tailpipe exit configurations so you can tailor the setup to how you use your truck. Choose the side exit that routes out behind the rear wheels, ideal for towing, or select the straight-out-the-back configuration that exits under the rear bumper for a clean, traditional look. Either way, the result is a bold, performance-driven exhaust note.
Fitment
This system fits 2014-2024 Ram 2500 Crew Cab Standard Bed/Long Bed and Mega Cab models with the 6.4L engine and coil spring rear suspension, in 2WD applications. It is compatible with 149.4, 160.5, and 169.4-inch wheelbases. Please note it does not fit trucks equipped with the optional factory airbag suspension. A heat shield is not included. This product carries a California Proposition 65 warning.
With premium stainless construction, a proven 50 Series HD muffler, and dual polished tips, the American Thunder cat-back is a complete upgrade that transforms both the sound and flow of your Ram 2500.
