Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the serious enthusiast who wants every performance benefit of a complete cat-back dual exhaust setup. Engineered as part of Flowmaster’s respected American Thunder series, this system delivers an aggressive exterior sound level paired with a moderate interior tone — the perfect balance for drivers who want to be heard on the street without an overbearing cabin drone. From the first startup to full throttle, this is a system designed to look, sound, and perform the part.
At the heart of the setup are specially engineered mufflers featuring Flowmaster’s 60 Series Delta Flow technology, purpose-built to maximize performance while maintaining that classic muscle car character. The entire system is fully mandrel bent to preserve exhaust flow and ensure a clean, precise fit. A Scavenger Series X-pipe is integrated to maximize exhaust pulse velocity, helping to build better torque while reinforcing the signature tone this series is known for.
Key Benefits
Like all Flowmaster systems, this American Thunder cat-back delivers real, measurable gains. Buyers can expect maximum increases of up to 17 horsepower and 19 ft-lb. of torque at the rear wheels, along with improved throttle response, added power, and better mileage. It’s a complete performance upgrade that enhances everyday drivability just as much as spirited driving.
- 60 Series Delta Flow mufflers included for aggressive, performance-tuned sound
- Fully mandrel-bent piping for optimized exhaust flow and easy fit
- Scavenger Series X-pipe maximizes exhaust pulse velocity for stronger torque
- Up to 17 hp and 19 ft-lb. torque gains at the rear wheels
- Dual tail pipe configuration in a silver pipe finish
- 2.50″ inlet diameter with an aggressive exterior tone and moderate interior sound
- CARB (California) compliant with Emission Code 5
Sound & Performance Character
This system is tuned for enthusiasts who want presence. The aggressive exterior sound level announces your vehicle’s intent, while the moderate interior tone keeps long drives comfortable. The combination of Delta Flow muffler technology and the Scavenger Series X-pipe delivers that unmistakable American muscle character, backed by genuine throttle response and power improvements.
Fitment & Installation
Designed with easy fit in mind, this dual cat-back exhaust system includes all necessary parts and hardware for a straightforward installation. It is configured for 2WD applications and features a 2.50″ inlet diameter. Please note this system is CARB (California) compliant and carries a California Proposition 65 warning. Mufflers are included, while a heat shield is not included. Confirm your specific application before ordering to ensure correct fitment.
