Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the enthusiast who wants the classic look of a traditional dual exhaust combined with the real-world performance benefits of a Flowmaster cat-back setup. Engineered as a complete dual-out system, it starts with a 2.50-inch flanged inlet pipe that connects directly to the catalytic converter, then quickly transitions to a full 3.00-inch mandrel-bent aluminized steel inlet tube for smooth, high-volume flow into the muffler.
At the heart of the system sits a large-case 80 Series Cross-flow performance muffler, engineered to produce the deep, powerful sound Flowmaster is known for. From there, the exhaust routes into dual 3.00-inch mandrel-bent tailpipes that exit out the back, finished with dual 3.00-inch polished stainless steel tips for a muscular, aggressive appearance that matches the tone.
Sound & Performance
American Thunder systems are tuned to deliver a moderate-to-aggressive exterior tone paired with a mild-to-moderate interior tone, making them ideal for drivers who want their performance to be heard without an overwhelming cabin drone. Like all Flowmaster systems, this cat-back is designed to improve throttle response, power, and mileage, giving you a noticeable upgrade over the restrictive factory exhaust.
Installation & Fitment
Designed for an easy fit, the system uses the factory hanger locations for a straightforward, bolt-on installation. It utilizes U-Bolt clamping and comes complete with all necessary parts and hardware, so you have everything needed to get the job done. This configuration is set up for 2WD applications and is CARB (California) compliant with Emission Code 5, making it a legal choice in states with stricter emissions requirements.
Key Highlights
- Dual-out American Thunder cat-back with 2.50-inch flanged inlet connecting directly to the catalytic converter
- Full 3.00-inch mandrel-bent aluminized steel inlet tube for improved flow
- Large-case 80 Series Cross-flow performance muffler for a deep, powerful sound
- Dual 3.00-inch mandrel-bent tailpipes exiting out the back
- Dual 3.00-inch polished stainless steel tips for a muscular look
- Uses factory hanger locations with U-Bolt clamping for easy installation
- CARB compliant (Emission Code 5) and configured for 2WD
The muffler is included as part of the kit, and the complete package ships with all necessary hardware for a clean, confident install. Whether you’re chasing a better exhaust note, sharper throttle response, or that timeless traditional dual exhaust look, the American Thunder Cat-back delivers on all three. Backed by Flowmaster’s 3-year Limited Warranty, it’s a proven upgrade for enthusiasts who demand both style and substance from their exhaust.
