Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered for RAM 1500 owners who want a deep, powerful exterior sound backed by the real performance benefits Flowmaster is known for. Designed for the 2019-2024 and 2026 RAM 1500 (New body) with the 5.7L Hemi engine and factory dual tailpipes, this bolt-on system upgrades your truck’s tone and flow while keeping installation straightforward enough to tackle at home.
At the heart of the kit is the 50 Series HD muffler, originally developed specifically for RAM Hemi engines to deliver maximum power and exterior sound quality. The result is an aggressive, deep exhaust note when you get on the throttle, paired with a moderately pleasant interior tone at cruising speeds so long highway drives stay comfortable.
Key Benefits
Every component is built to perform and last. The system routes exhaust through mandrel-bent stainless steel tubing into the black-finished 50 Series HD muffler, then out through dual 3.00-inch tailpipes engineered to clear the factory spare tire. Those pipes are capped with large 4.00-inch black ceramic-coated exhaust tips featuring an embossed logo, filling out the factory cutouts in the rear bumper for a clean, aggressive finished look.
- American Thunder series cat-back with a 24.00-inch, 50 Series HD center-inlet muffler tuned for RAM Hemi engines
- Mandrel-bent stainless steel tubing for smooth, efficient flow
- Dual 3.00-inch tailpipes with dual outlet configuration that clear the factory spare tire
- Large 4.00-inch black ceramic-coated tips with embossed logo that fill the factory bumper cutouts
- Uses factory hangers and includes all necessary parts, hardware, and instructions for an easy at-home install
- CARB (California) compliant and emissions legal
Emissions Legal & Warranty
This is an emissions-legal, bolt-on system that is CARB (California) compliant, so you can upgrade your sound and flow with confidence. It also comes backed by Flowmaster’s Lifetime Limited Warranty for lasting peace of mind. Note: a California Proposition 65 warning applies.
Fitment
The American Thunder cat-back fits all 5.7L Hemi 2- and 4-wheel-drive RAM 1500 models with 140.5, 144.6, and 153.5-inch wheelbases and 5.7- or 6.4-foot bed lengths, provided the truck is equipped with factory dual tailpipes. Because the system relies on the factory hangers, everything lines up as intended for a clean, direct installation.
If you’re chasing that unmistakable deep Hemi rumble with genuine Flowmaster performance and finish quality, the American Thunder cat-back delivers the sound, the look, and the bolt-on convenience in one complete kit.
