Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered for drivers who want an aggressive exterior sound while keeping the cabin comfortable with a moderate interior sound level. Built to bolt on for all 2015-2023 Dodge Charger SE, SXT and 2015-2020 Chrysler 300S models equipped with the 3.6L engine, this complete cat-back kit replaces the restrictive factory piping with a purpose-built performance system designed around Flowmaster’s signature deep tone.
Constructed from 409S stainless steel, the system uses dual 2.50-inch mandrel-bent tubing to promote smooth, unrestricted flow. That tubing feeds into Flowmaster’s exclusive Scavenger X-pipe, which helps maximize performance and creates the unique, deep exhaust note the American Thunder series is known for. The setup is finished with 2.50-inch stainless steel tips that exit cleanly within the factory rear bumper valence for a factory-integrated appearance.
Sound & Performance
A pair of Super 44 performance mufflers deliver the aggressive attitude outside the car, while a set of specially-tuned chambered resonators works to keep interior drone to a minimum. The rear left and rear right resonators share a chambered design with 6.00-inch body width, 3.00-inch body height and 11.50-inch body length, tuned to balance an assertive exterior voice with everyday driving comfort inside the cabin.
Key Highlights
- 409S stainless steel construction with dual 2.50-inch mandrel-bent tubing
- Exclusive Scavenger X-pipe for maximum performance and a unique deep tone
- Super 44 series performance mufflers included in the kit
- Specially-tuned chambered resonators (rear left and rear right) to reduce interior drone
- Dual 2.50-inch stainless steel tips that exit within the factory rear bumper valence
- Flanged mount type with silver pipe finish and black muffler finish
Fitment
This American Thunder cat-back system is designed for 2015-2023 Dodge Charger SE and SXT models, as well as 2015-2020 Chrysler 300S models, all with the 3.6L engine. Confirm your model year and engine before ordering to ensure correct application.
Installation & What’s Included
Designed as a true bolt-on upgrade, the kit includes all necessary parts, hardware and easy-to-follow installation instructions for a hassle-free install. The muffler is included as part of the complete kit (kit-only muffler part number), giving you everything needed to transform the sound and flow of your Charger or 300S in one package. Note: no heat shield is included, and no tip logo is present. This product is CARB (California) compliant and carries a California Proposition 65 warning.







