Description
Overview
Wake up the power and performance of your 5.7L Hemi-powered 2004-2005 Dodge Ram 1500 with the Flowmaster American Thunder Cat-back Exhaust System. Engineered to deliver a moderately aggressive exterior tone while keeping in-cab drone to a minimum, this complete cat-back upgrade replaces restrictive factory piping with a free-flowing, performance-tuned system that both looks and sounds the part.
The entire system is fully constructed from 16-gauge mandrel-bent stainless steel tubing, feeding into a proven 50 Series HD performance muffler. With a single 2.75-inch inlet flowing into a dual-out design, the American Thunder setup is built to balance real-world street manners with an unmistakable Hemi growl when you get on the throttle.
Key Benefits
Flowmaster’s 50 Series HD muffler is the heart of this system, delivering an aggressive yet moderate sound character that stays refined at cruise and comes alive under load. The dual 2.50-inch mandrel-bent tailpipes maintain smooth, unrestricted exhaust flow, while a pair of large 3.00-inch polished stainless steel tips add a finished, muscular appearance at the rear.
- 16-gauge mandrel-bent stainless steel tubing throughout for durability and flow
- 50 Series HD performance muffler included for an aggressive/moderate tone with minimal cab drone
- Single 2.75-inch inlet into dual 2.50-inch mandrel-bent tailpipes
- Large 3.00-inch polished stainless steel exhaust tips
- Complete kit with all necessary parts and hardware for an easy at-home installation
- CARB (California) compliant — Emission Code 5
Choose Your Exit Configuration
This custom system gives you a choice of tailpipe exits to match how you use your truck. Opt for the dual side-exit configuration, routing behind the wheels for towing-friendly clearance, or run the tips straight out the back beneath the rear bumper for a bold, muscular look. Either way, you get the same performance-minded stainless construction and the signature American Thunder sound.
Fitment
The American Thunder Cat-back Exhaust System is designed specifically for the 5.7L Hemi-powered 2004-2005 Dodge Ram 1500. It fits both 2-wheel drive and 4-wheel drive models and accommodates all wheelbases, making it a versatile upgrade across the Ram 1500 lineup. Please note that a heat shield is not included with this system.
Backed by Flowmaster’s Lifetime Limited Warranty, this cat-back system delivers the flow, tone, and finish Hemi owners expect. This product carries a California Proposition 65 warning. Whether you tow, cruise, or simply want your Ram to announce its presence, the American Thunder system brings serious performance and a premium stainless finish to your 1500.
