Description
Upgrade your 2024-2026 Ford Mustang GT 5.0L or EcoBoost 2.3L with the Flowmaster American Thunder Axle-Back Exhaust System. Designed for Mustangs with the standard factory non-valved exhaust system, this performance exhaust delivers a deep aggressive tone, improved throttle response, and maximum power gains of up to 8 hp and 6 lb-ft at the rear wheels.
Featuring Flowmaster's Super 44 Series mufflers, this system balances exterior power with a moderate interior tone, providing a perfect combination for street and performance driving. Constructed of 409 stainless steel with 3.00-inch mandrel bent tubing, it ensures optimal flow, durability, and corrosion resistance. The dual 4.00-inch polished stainless steel tips add a custom, premium look. Installation is straightforward using the factory hanger locations, and all necessary hardware is included. Backed by Flowmaster’s Lifetime Limited Warranty.
Key Features
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Super 44 Series mufflers deliver deep, powerful sound with increased performance
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Maximum measured gains of 8 hp and 6 lb-ft at the rear wheels
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3.00-inch 16-gauge mandrel bent 409 stainless steel tubing for maximum flow and durability
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Dual 4.00-inch polished stainless steel tips for a custom appearance
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Aggressive exterior sound with moderate interior tone
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Uses factory hanger locations for easy installation
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Fits both coupe and convertible models
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Includes all necessary hardware for installation
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Lifetime Limited Warranty
Fitment
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Vehicle Make: Ford
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Vehicle Model: Mustang GT / EcoBoost
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Engine Options: 5.0L V8 GT, 2.3L EcoBoost
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Years: 2024, 2025, 2026
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Exhaust System Type: Axle-Back
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Compatible With: Standard factory non-valved exhaust only
Specifications
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Brand: Flowmaster
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Exhaust Series: American Thunder
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Muffler Series: Super 44
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Muffler Type: Reflection
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Muffler Material: 409 Stainless Steel
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Muffler Shape: Oval
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Muffler Finish: Black High-Temperature Paint
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Muffler Dimensions: 10.25" L x 9.50" W x 4.00" H (each muffler)
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Inlet Diameter: 3.00" (Slip-Fit)
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Outlet Diameter: 3.00" (Slip-Fit)
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Tail Pipe Quantity: 2
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Tail Pipe Diameter: 3.00"
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Tip Quantity: 2
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Tip Diameter: 4.00"
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Tip Material: 304 Stainless Steel
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Tip Finish: Polished
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Tip Edge: Angled
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Tip Logo: Embossed
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Main Piping Diameter: 3.00"
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Pipe Material: 409 Stainless Steel
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Sound Level: Aggressive / Moderate
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Clamps Included: Yes
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Hangers Included: Yes
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California Proposition 65: Chromium (hexavalent compounds)
