Description
Overview
The Flowmaster American Thunder Crossmember-Back Exhaust System is built for the driver who wants their performance to be seen and heard. Engineered as a true dual crossmember-back system, it delivers a moderate to aggressive exhaust tone from a proven combination of components designed to work together. From the built-in H-pipe crossover to the pair of hand-selected Super 44 Series mufflers, every part is chosen to give your vehicle a bolder voice without sacrificing everyday drivability.
Constructed from 16-gauge mandrel-bent stainless steel tubing, this American Thunder system is designed with an easy fit in mind. The mandrel-bent tubing helps maintain smooth, unrestricted flow, while the stainless steel construction stands up to the demands of the road. A 2.50-inch inlet diameter and dual tailpipe design round out a system built for enthusiasts who want their engine to breathe better and sound the part.
Sound & Performance
The Super 44 Series mufflers are the heart of this system, producing an aggressive interior and exterior tone that announces your presence without becoming overwhelming. Like all Flowmaster exhaust systems, the American Thunder is designed to deliver improved throttle response, power, and mileage—so you get a system that both performs and turns heads. The dual tailpipes exit under the rear valance with a turn-down finish for a clean, purposeful look.
Key Highlights
- True dual crossmember-back configuration with a built-in H-pipe crossover
- 16-gauge mandrel-bent stainless steel tubing for durable, smooth-flowing construction
- Pair of specially selected Super 44 Series mufflers for a moderate-to-aggressive tone
- 2.50-inch inlet diameter with dual tailpipes that exit under the rear valance with a turn-down
- Includes all hangers and hardware necessary for installation
- CARB (California) compliant and designed for 2WD applications
What’s Included
This kit-only system includes the Super 44 Series mufflers along with all the hangers and hardware needed to complete the installation. Please note that exhaust tips are sold separately and no heat shield is included, giving you the flexibility to finish the system to your taste. If you prefer aluminized steel construction instead of stainless, Flowmaster offers optional system #17282.
Fitment
Designed specifically for 2WD applications, this American Thunder system carries a California Proposition 65 warning and is CARB compliant. Whether you’re upgrading a daily driver or building a weekend performer, this crossmember-back setup pairs the aggressive Super 44 sound with the improved airflow that Flowmaster enthusiasts expect. Choose the American Thunder system for a straightforward upgrade that adds real presence to your ride.
