“Flowmaster 18-23 Mustang 5.0L American Thunder Axle-Back Exhaust System (w/Valves)”
“...is Flowmaster® American Thunder® Axle-back exhaust system is for 2018-2023 Ford Mustang GT coupes and convertibles with the 5.0L engine and Factory Active Performance...”
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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 2018-2023 Mustang GT 5.0L with Factory Active Performance Exhaust Valves. - Aggressive to moderate sound
Flowmaster American Thunder Axle-back Exhaust System
Features
For Vehicles With Active Performance Exhaust Option
Quad 4.00-inch Polished 304 Stainless Steel Tips
Aggressive Race-proven Outlaw Mufflers
Dyno Tuned for Maximum Performance
Uses the Factory Hanger Locations
Full Stainless Steel Construction
Straight-through Muffler Design
Lifetime Limited Warranty
Easy Installation
Manufacturer notes
Fits 2018-2023 Mustang GT 5.0L Coupes & Convertibles with Factory Active Performance Exhaust Valves.
Flowmaster 18-23 Mustang 5.0L American Thunder Axle-Back Exhaust System (w/Valves)
1823 MUSTANG 50L AB AMT WVALVES PO
SYS 18-23 MUSTANG 5.
About the manufacturer
This Flowmaster® American Thunder® Axle-back exhaust system is for 2018-2023 Ford Mustang GT coupes and convertibles with the 5.0L engine and Factory Active Performance Exhaust Option. System features include a pair of specially designed Outlaw® series mufflers giving you high flow with a moderately aggressive exterior and interior tone when the valves are closed, and an aggressive "wide open" exterior sound level when you open up the valves. Other features include large 3.00-inch mandrel-bent 409S stainless steel tubing for high flow, durability, and longevity. Add to that, a pair of our high-quality valves to accommodate the factory exhaust actuators for when you really want to open up the sound. The system is finished off with quad 4.00-inch polished 304 stainless steel tips for an aggressive look that demands attention, the same as the exhaust note. Includes all necessary parts, hardware and detailed instructions for an easy installation you can do at home. Covered by our Lifetime Limited Warranty. Note: Fits both coupes and convertibles.
Additional manufacturer information
SYS 18-23 MU
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