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 setup pairs mandrel-bent tubing with Flowmaster’s proven muffler technology to deliver a deep, powerful, and unmistakably aggressive tone — both inside the cabin and out on the street. If you’re chasing that moderate-to-aggressive sound with real performance behind it, the American Thunder series was engineered exactly for you.
At the heart of the system are a pair of Super 44 Series mufflers, known for their aggressive character and strong flow. Feeding those mufflers are mandrel-bent 2.50-inch aluminized steel inlet pipes, engineered for smooth, unrestricted exhaust flow that supports maximum performance. The result is the throttle response, power, and mileage improvements that Flowmaster systems are recognized for.
Key Benefits
Designed with an easy fit in mind, this system utilizes the factory exhaust hangers for a quick, bolt-on installation. Every component is included with all necessary parts and hardware, so you can get the system mounted and dialed in without hunting for extra pieces. The large 2.50-inch mandrel-bent dual tailpipes exit straight out the back with a turn down at the lower valance for a clean, purposeful look.
- Complete cat-back dual exhaust system with aggressive tone
- Mandrel-bent 2.50-inch aluminized steel inlet pipes for smooth, high-flow performance
- Pair of Super 44 Series mufflers for a deep, powerful sound
- Dual tailpipes with turn-down exit at the lower valance
- Uses factory exhaust hangers for a quick, easy installation
- Includes all necessary parts and hardware
- CARB (California) compliant
Options & What’s Included
This kit ships with the mufflers included and covers the core cat-back system. Exhaust tips are sold separately, giving you the flexibility to finish the look exactly how you want it. If you prefer a stainless steel build, Flowmaster also offers the optional stainless steel system #817116, covered by a Lifetime Limited Warranty. This aluminized steel system, like all Flowmaster aluminized steel exhaust systems, is backed by a 3-year Limited Warranty.
Fitment & Compliance
This American Thunder system is configured for 2WD applications and fits Coupes and Convertibles. It carries Emission Code 5 and is CARB (California) compliant, so you can run the aggressive sound and improved flow you want with confidence. No heat shield is included with this configuration.
For drivers who want performance that’s felt on the throttle and heard from the tailpipe, the Flowmaster American Thunder Cat-back Exhaust System delivers a proven combination of aggressive sound, easy installation, and dependable Flowmaster engineering.
