Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the driver who wants the classic look of a traditional dual exhaust setup combined with all the performance advantages of a genuine Flowmaster cat-back system. Bolting directly onto the back of the catalytic converter, this complete exhaust system replaces your restrictive factory piping with a free-flowing, purpose-engineered design that delivers real gains you can feel behind the wheel.
At the heart of the system sits the Super 50 Series performance muffler (part number 530552), tuned to produce a moderately aggressive exterior tone paired with a comfortable, moderate interior sound level. That means you get an unmistakable American Thunder presence at wide-open throttle without the drone that makes long highway drives tiresome. From there, the system finishes with dual 2.50-inch tailpipes capped by polished 3.00-inch stainless steel tips for a muscular, finished appearance.
Key Benefits
Like every Flowmaster system, the American Thunder is engineered to improve throttle response, power, and mileage. The larger, less restrictive tubing helps your engine breathe more efficiently, translating into stronger performance and a more responsive pedal feel throughout the rev range.
- Super 50 Series performance muffler (PN 530552) for a moderately aggressive exterior and moderate interior tone
- Dual 2.50-inch tailpipes with a 2.50-inch inlet diameter for balanced flow
- Polished 3.00-inch stainless steel exhaust tips for a premium finished look
- Improved throttle response, power, and mileage over the restrictive factory system
- U-Bolt clamping and factory hanger locations for a straightforward bolt-on installation
- CARB (California) compliant — Emission Code 5
Choose Your Tailpipe Exit
Configure the American Thunder to match how you use your vehicle. Choose the straight-out-the-back exit for an aggressive, muscular stance, or select the behind-the-rear-wheels exit, which is ideal for towing applications. Both configurations carry the same silver-finish piping and polished stainless tips, so you get the look you want without compromising on the signature Flowmaster sound.
Installation & Fitment
Designed for an easy fit, the American Thunder cat-back uses the factory hanger locations and includes all necessary parts and hardware, including U-Bolt clamps, for a clean, no-guesswork installation. The system is engineered for 2WD applications and installs from the back of the catalytic converter rearward. Note that a heat shield is not included with this system.
Backed by Flowmaster’s 3-year Limited Warranty, the American Thunder Cat-back Exhaust System delivers the traditional dual-exhaust look, proven Flowmaster performance, and the aggressive tone enthusiasts expect. Please note this product carries a California Proposition 65 warning.
