Description
Overview
The Flowmaster American Thunder Crossmember-Back Exhaust System is built for the driver who wants their performance to be heard. Engineered as a true dual crossmember-back system, it delivers a moderate to aggressive tone inside and out, giving your vehicle the kind of bold, authoritative exhaust note that Flowmaster is known for. If you crave real presence at idle and under throttle without going overboard, this system hits that sweet spot between refined and rowdy.
At the heart of the system is a pair of specially selected Super 44 Series mufflers, tuned to produce that signature American Thunder character. A built-in H-pipe crossover balances exhaust flow between both banks, smoothing out the sound while helping the engine breathe more efficiently. The result is the classic Flowmaster combination of enhanced throttle response, added power, and improved mileage.
Construction & Design
Every component is constructed from durable 16-gauge mandrel-bent stainless steel tubing with a 2.50-inch inlet diameter, ensuring smooth, unrestricted flow and long-lasting corrosion resistance. Designed with an easy fit in mind, the system routes cleanly through the factory rear valance exhaust cutouts and finishes with a pair of polished 3.00-inch stainless steel tips for a clean, aggressive look. All hangers and hardware needed for installation are included in the kit.
Key Highlights
- True dual crossmember-back layout with a built-in H-pipe crossover
- Pair of Super 44 Series mufflers for a moderate to aggressive tone
- 16-gauge mandrel-bent stainless steel tubing with a 2.50-inch inlet
- Dual polished 3.00-inch stainless steel tips that exit through factory valance cutouts
- Includes all necessary hangers and hardware for installation
- CARB compliant and designed for 2WD applications
Sound & Performance
The American Thunder series is best suited to the enthusiast who wants both interior and exterior volume dialed up. Expect a deep, aggressive tone that comes alive under acceleration while remaining livable during everyday driving. Beyond the sound, you’ll benefit from the performance advantages every Flowmaster system is designed to deliver: improved throttle response, more usable power, and better fuel efficiency.
Material Options & Fitment
This kit is offered in polished stainless steel construction. If you prefer an aluminized steel version, Flowmaster offers optional system #17281. Please note that this system does not fit convertibles or cars equipped with staggered shocks, and it does not include header reducer cones or downpipes for factory manifolds. Choose the configuration that best matches your vehicle and driving goals, and back your build with the trusted engineering of the Flowmaster American Thunder lineup.
