Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System transforms the exhaust note and performance of your 5.7L Hemi with a fully engineered, bolt-on upgrade. Built for the 2015-2016 Dodge Charger R/T and 2015-2023 Chrysler 300, this American Thunder system delivers the aggressive exterior and interior sound level that Hemi owners crave, backed by the performance credibility of the Flowmaster name. If you want a deep, purposeful growl without sacrificing everyday drivability, this cat-back is engineered to hit that mark.
At the heart of the system is a pair of Super 44 Series mufflers, finished in black, that produce a deep, aggressive tone with a moderate-to-aggressive character. The dual 2.50-inch Scavenger Series X-Pipe and mandrel-bent tubing are designed to improve exhaust flow and scavenging for maximum performance and a rich, throaty note. The complete assembly is constructed from durable 409S stainless steel with a silver pipe finish for lasting corrosion resistance.
Key Benefits
This is a true bolt-on kit that arrives with everything needed to get the job done. The system uses flanged connections for a straightforward installation, and it exits through 2.50-inch stainless steel tips that route cleanly within the factory exhaust bezels in the rear bumper valence for an OE-style appearance with a serious upgrade in sound and attitude. Dual tail pipes complete the aggressive look and balanced exit.
- Fits 2015-2016 Dodge Charger R/T and 2015-2023 Chrysler 300 equipped with the 5.7L Hemi
- Pair of Super 44 Series mufflers for a deep, aggressive sound
- Dual 2.50-inch Scavenger Series X-Pipe with mandrel-bent tubing for maximum performance and a deep performance tone
- 409S stainless steel construction with a silver pipe finish and black mufflers
- 2.50-inch stainless steel tips that exit within the factory rear valance bezels
- Flanged mount type with all necessary parts and hardware included
- CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
Sound & Performance
The American Thunder series is tuned for drivers who want an unmistakable presence. Expect an aggressive yet moderate character that comes alive under throttle while remaining livable on the street. The X-Pipe and mandrel-bent design work together to keep exhaust velocity high, supporting the performance benefits you expect from Flowmaster while dialing in that signature deep tone.
Fitment & Installation
Designed for an easy fit, this cat-back includes all necessary parts and hardware for installation, and the tips are engineered to sit within the factory exhaust bezels in the rear bumper valence. Please note: this system does NOT fit Charger Pursuit models identified by round exhaust cutouts without factory exhaust bezels in the rear valance. Every kit is backed by the Flowmaster Lifetime Limited Warranty for lasting peace of mind.









