Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the enthusiast who wants their performance to be heard. This complete cat-back dual exhaust system pairs a bold, aggressive tone with the real-world benefits Flowmaster is known for, giving your vehicle a deeper, more powerful voice from the moment you turn the key. Engineered as a bolt-on upgrade, it delivers moderate to aggressive interior and exterior sound without sacrificing the everyday drivability you expect.
At the heart of the system are a pair of Super 44 Series mufflers, tuned to produce that unmistakable deep, powerful note. Mandrel-bent 2.50-inch stainless steel inlet pipes flow smoothly into the mufflers for maximum performance, while the large 2.50-inch mandrel-bent tailpipes exit straight out the back with a turn down at the lower valance for a clean, purposeful look.
Key Benefits
Like all Flowmaster systems, the American Thunder cat-back is designed to do more than sound great. The improved exhaust flow contributes to better throttle response, added power, and improved mileage, making it a smart upgrade for drivers who want performance gains they can feel and hear. The stainless steel construction is built to hold up over the long haul, and the complete kit includes all necessary parts and hardware for a straightforward installation.
Installation is kept simple by design. The system utilizes the factory exhaust hangers for a quick and easy fit, so you can get your dual setup in place and back on the road without fabrication headaches.
- Complete cat-back dual exhaust system with an aggressive tone
- Mandrel-bent 2.50-inch stainless steel inlet pipes for maximum flow
- Pair of Super 44 Series mufflers for a deep, powerful sound
- Large 2.50-inch mandrel-bent tailpipes exiting straight out the back with a turn down at the lower valance
- Uses factory exhaust hangers for a quick, easy installation
- Improved throttle response, power, and mileage
- Includes all necessary parts and hardware; covered by a Lifetime Limited Warranty
- CARB (California) compliant
Configuration & Media
This American Thunder system is a kit-only offering: the Super 44 mufflers are included, while exhaust tips are sold separately, letting you finish the look exactly the way you want. No heat shield is included with this system. If you prefer a different material, an optional aluminized steel version is available as #17116 — choose the configuration that best fits your build.
Fitment
This 2WD dual exhaust system fits Coupes and Convertibles. It is CARB (California) compliant and carries a California Proposition 65 warning. Please verify this system is right for your specific application before ordering.









