2024-2025
2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) 1 Hour
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
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Find Axle-Back Exhaust for your Mustang
Flowmaster Outlaw Axle-Back Exhaust System (15-23 Mustang EcoBoost w/o Active Exhaust)Find parts that fit my vehicle
Item 525581A
$0.00
500+ Reviews
25 Answers
Our Price
$553.95
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Super Aggressive Flowmaster Outlaw Sound
- Durable 409 Stainless Steel Construction
- 2.5" Mandrel-Bent Tubing
- 4" Polished Stainless Steel Tips
- Includes Two Flowmaster Outlaw Mufflers
- Not Compatible with Active Exhaust
- Fits 2015-2023 EcoBoost Mustangs
| Brand | Flowmaster |
| Exhaust System Type | Axle-Back System |
| Exhaust System Tip Finish | Chrome, Polished |
| Exhaust Loudness | Aggressive |
Description
Super Aggressive Flowmaster Sound. Give your EcoBoost powered Mustang that unmistakable Flowmaster sound with the Outlaw Series Axle-Back exhaust system from AmericanMuscle. This system improves exhaust flow using Flowmaster's race-oriented style Outlaw mufflers for that super, aggressive exhaust note your high powered Pony deserves.
Stainless Steel Construction. Constructed from durable 2.5" 16 gauge 409 stainless steel tubing for it's corrosion resistant properties, the Flowmaster Outlaw Axle-Back features (2) race-oriented mufflers with massive 4.0" diameter polished stainless steel tips for impressive muscle car looks and sound. As an added bonus, the tips are embossed with the "Flowmaster" logo for true custom styling.
Cut & Clamp Installation. The installation of this Axle-Back Exhaust requires cutting and removing the stock muffler assemblies, and clamping the new muffler assemblies in place. Clamps and instructions are provided.
Application. This Flowmaster Outlaw Series Axle-Back exhaust system is designed to fit the 2015-2023 EcoBoost Mustangs without the Active Valve Exhaust.
Stainless Steel Construction. Constructed from durable 2.5" 16 gauge 409 stainless steel tubing for it's corrosion resistant properties, the Flowmaster Outlaw Axle-Back features (2) race-oriented mufflers with massive 4.0" diameter polished stainless steel tips for impressive muscle car looks and sound. As an added bonus, the tips are embossed with the "Flowmaster" logo for true custom styling.
Cut & Clamp Installation. The installation of this Axle-Back Exhaust requires cutting and removing the stock muffler assemblies, and clamping the new muffler assemblies in place. Clamps and instructions are provided.
Application. This Flowmaster Outlaw Series Axle-Back exhaust system is designed to fit the 2015-2023 EcoBoost Mustangs without the Active Valve Exhaust.
Flowmaster 817713
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (2) Muffler Assemblies
Tech Guides:
4.8
Customer Reviews (500+)
Questions & Answers (25)
Will It Fit My Mustang
- EcoBoost - 15, 16, 17, 18, 19, 20, 21, 22, 23
