Flowmaster · New

Flowmaster 15-23 Mustang BASE 2.3L/3.7L American Thunder SS Axle-Back Exhaust System

Name: Flowmaster 15-23 Mustang BASE 2.3L/3.7L American Thunder SS Axle-Back Exhaust System
Brand: Flowmaster
SKU: flo817748
Price: 956.95 USD

MPN 817748 · Store SKU flo817748

$956.95

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Supplier stock checked 11/8/2026, 5:19:40 AM UTC. Adding a part does not reserve it.

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Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

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Product details

Flowmaster's American Thunder Axle-back exhaust system for the 2015-2023 Ford Mustang with the 2.3L Ecoboost and 3.7L engines is perfect for the person looking for a moderately aggressive sound level outside of the car while maintaining a mild sound level inside. This bolt-on emissions-legal system for cars features 3.00-inch mandrel-bent inlet pipes flowing into a pair of Super 10 Series mufflers for maximum performance. The system is constructed out of 409S stainless steel for durability, is finished off with large 4.00-inch polished stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Note: The sound level of this system is quieted by the factory resonators. Check out our No Resonator X-Pipe and Y-Pipe kits #81107 and #81108, if you desire more sound from your Ecoboost or 3.7L engine. Fits 2015-2023 Ford Mustang with 2.3L Ecoboost and 3.7L engines. Fits Coupes and Convertibles. - Aggressive to moderate sound Flowmaster American Thunder Axle-back Exhaust System

Manufacturer fitment & guides

Check 817748 against the manufacturer’s application information below.

Part-specific notes

California Proposition 65: Y

Manufacturer documents

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