Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered for the 2006-2008 Dodge Ram 1500 equipped with the 4.7L engine, delivering the deep, aggressive exterior sound and moderate interior tone that Ram owners look for from Flowmaster. This is a true bolt-on upgrade that pairs the performance benefits of the American Thunder series with a straightforward, at-home installation, making it an ideal step up from a restrictive factory setup.
At the heart of the system is a specially designed Super 50 Series performance muffler, tuned to produce a moderate-to-mild sound level that stays muscular on the outside without overwhelming the cabin. Air moves through 16-gauge mandrel-bent stainless steel tubing with a 3.00-inch inlet diameter, feeding into dual 2.50-inch aluminized steel tailpipes. The system finishes with a pair of large 3.00-inch polished stainless steel tips for a clean, aggressive look at the rear of the truck.
Key Benefits
This cat-back configuration is a DOR/DOS design, meaning it can be set up as Dual Out Rear or Dual Out Side to match how you use your Ram. Exit the tailpipes behind the rear wheels, which is ideal for towing, or route them straight out the back under the rear bumper for a bolder, more muscular stance. Because the tailpipes use the factory hanger locations, you get a precise fit and a simpler install with all necessary parts and hardware included.
- Super 50 Series performance muffler with a moderate/mild sound level and deep, aggressive exterior tone
- 16-gauge mandrel-bent stainless steel tubing with a 3.00-inch inlet for smooth flow
- Dual 2.50-inch aluminized steel tailpipes finished with large 3.00-inch polished stainless steel tips
- DOR/DOS versatility: exit behind the rear wheels for towing or straight out the back for looks
- Uses factory hanger locations for an easy, bolt-on, do-it-at-home installation
- CARB (California) compliant, emissions-legal exhaust system
Fitment
This system is designed for 2006-2008 Dodge Ram 1500 trucks with the 4.7L engine. It fits 2-wheel drive and 4-wheel drive models across all wheelbases, with the exception of the MegaCab. A California Proposition 65 warning applies, and the system carries an Emission Code 5 rating while remaining CARB compliant for street-legal use where applicable.
Options & Configuration
The kit ships complete with the muffler included and all hardware needed to get your Ram back on the road. If you prefer an all-aluminized steel construction with a 3-year Limited Warranty, consider exhaust system #17424 as an alternative. This American Thunder system is backed by a Lifetime Limited Warranty. Choose the exit configuration that best fits your driving and towing needs, and enjoy the sound and flow of a purpose-built Flowmaster cat-back.










