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Home / Exhaust / Axle Back / Flowmaster 15-23 Mustang BASE 2.3L/3.7L American Thunder SS Axle-Back Exhaust System
Flowmaster 15-23 Mustang BASE 2.3L/3.7L American Thunder SS Axle-Back Exhaust SystemRepresentative image
Appearance and included parts may differ. Image availability does not confirm fitment or availability.
Flowmaster

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

PART 817748CATEGORY Axle Back
$849.95
MSRP $956.95You save $107.00
$849.95
1
LISTED BY THE MANUFACTURER FOR

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

“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...”

Confirm fitment with the part number before ordering.

Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Some supplier details are unavailable for this product.

Product description

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

Features

Large 4.00-inch Polished Stainless Steel Tips

16-gauge Mandrel-bent 3.00-inch Tubing

Super 10 Series Performance Mufflers

Dyno Tuned For Maximum Performance

Uses the Factory Hanger Locations

Stainless Steel Construction

Lifetime Limited Warranty

Flowmaster Quality

Manufacturer notes

Fits 2015-2023 Ford Mustang with 2.3L Ecoboost and 3.7L engines. Fits Coupes and Convertibles.

Supplier category
Exhaust, Mufflers & Tips
Supplier subcategory
Axle Back
UPC / barcode
700042032303
Units per product
1
Supplier Proposition 65 status
Y
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
No
CARB acknowledgement required
No
Freight delivery required
No
Powersports product
No

Manuals and documents

More manufacturer information

Other product descriptions

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

1523 MUSTANG BASE 23L37L AB AMT 409S

SYS 15-23 MUSTANG BA

About the manufacturer

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.

Additional manufacturer information

SYS 15-23 MU

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