Flowmaster American Thunder Axle-Back Exhaust System Non-Active Mustang EcoBoost/GT 2024



MSRP $1,063.00
You save 10%

Flowmaster American Thunder Axle-Back Exhaust for 2024 2.3L EcoBoost Mustangs and 5.0L GT Mustangs without a Factory Active Exhaust System.

With dyno gains of up to 8 horsepower, Flowmaster’s American Thunder Axle-Back Exhaust System extracts the full potency of 2024 GT and EcoBoost Mustangs! 2.3L and 5.0L engines alike garner a maximum of 6 lb/ft over stock at the rear wheels with the help of this system’s 16-gauge, stainless steel tubing. Each of its 3” is formed using mandrel bending techniques that cultivate peak exhaust flow. A Super 44 series muffler supports it, simultaneously elevating your S650’s sound to a mean performance tone. Plus, since the system reuses the factory locations, installing this powerhouse using the supplied hardware is straightforward. 

Features and Benefits:
- 3”, 16-gauge stainless steel, mandrel-bent tubing
- Maintains maximum exhaust flow
- Max increases up to 8 HP & 6 lb/ft over stock at rear wheels
- Super 44 series muffler articulates deep, performance sound
- Muffler built from corrosion-resistant, 409 stainless steel
- Dual 4”, polished, steel tips imply custom look
- Includes all necessary hardware
- Reuses factory locations for ease of installation

Vehicle Fitment:
- 2024 EcoBoost and GT Mustangs
- Fits models with a 2.3L and 5.0L engine
- For Non-Active factory exhaust systems

California Residents: Proposition 65 Warning

Installation Difficulty


Intermediate skill is required for this installation.

Vehicle Fitment

This product will fit the following Mustang years:

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