Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the enthusiast who wants their performance to be seen and, more importantly, heard. Engineered as a complete cat-back dual exhaust setup, it pairs an aggressive tone with the mandrel-bent construction and proven muffler technology that Flowmaster is known for. If you’re chasing a moderate-to-aggressive exhaust note alongside real performance gains, the American Thunder series delivers a well-rounded package right out of the box.
Key Benefits
Like all Flowmaster systems, the American Thunder is designed to improve throttle response, power, and mileage. The smooth, mandrel-bent tubing preserves flow through every bend for maximum performance, while the specially selected Super 40 Series muffler shapes the signature aggressive sound this kit is famous for. The result is a system that wakes up your engine’s character both inside and outside the cabin without sacrificing everyday drivability.
Sound & Performance
At the heart of this cat-back system is the included Super 40 Series muffler, tuned to deliver a moderate to aggressive interior and exterior tone. It’s the perfect choice for drivers who want their performance to announce itself. With a dual tail pipe configuration and a 2.50-inch inlet diameter, the system is designed to breathe and sound the part while maintaining a clean, functional appearance thanks to its silver pipe finish.
Highlights
- Complete cat-back dual exhaust system with an aggressive tone
- Mandrel-bent tubing for maximum performance and smooth flow
- Includes the specially selected Super 40 Series muffler
- Dual tail pipe configuration with a 2.50-inch inlet diameter
- Silver pipe color for a clean, finished look
- Designed for improved throttle response, power, and mileage
Easy Fit & Installation
Flowmaster engineered the American Thunder system with easy fit in mind. It includes all necessary parts and hardware for a straightforward installation, so you can spend less time under the vehicle and more time enjoying the results. Designed for 4WD applications, this cat-back system replaces your factory piping with performance-minded components that bolt into place.
Fitment & Compliance
This system is CARB (California) compliant with an emission code of 5, making it a smart choice for enthusiasts who need to meet stricter emission standards. Please note the muffler is included as part of the kit only, and no heat shield is included with this configuration. This product carries a California Proposition 65 warning. Always confirm the correct application for your specific vehicle before ordering to ensure a proper fit.
