Flowmaster 18-23 Mustang 5.0L Outlaw Axle-Back Exhaust System - (w/Valves)

This Flowmaster® Outlaw Axle-back exhaust system is specifically designed for the 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 our race-proven Outlaw® Series mufflers for a very aggressive exterior sound level with a noticeable interior tone and 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 stainless steel tips for an aggressive look that demands attention, the same as the exhaust note from the Outlaw Series mufflers. Includes all necessary parts, hardware and detailed instructions for an easy installation you can do at home. Covered by our Lifetime Limited Warranty. Fits 2018-2023 Mustang GT 5.0L with Factory Active Performance Exhaust Valves. - Aggressive sound Fits 2018-2023 Mustang GT 5.0L Coupes & Convertibles with Factory Active Performance Exhaust Valves.

• For Vehicles With Active Performance Exhaust Option
• Polished Quad 4.00-inch 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
• Easy Installation

Upgrade the sound and appearance of your 2018-2023 Ford Mustang GT coupe or convertible with the Flowmaster Outlaw Axle-Back Exhaust System, Part Number 817825. Designed for models equipped with the factory Active Performance Exhaust option, this system includes race-proven Outlaw Series mufflers that deliver an aggressive exterior sound with a noticeable interior tone. The straight-through muffler design and dyno-tuned construction support efficient exhaust flow and responsive performance while retaining compatibility with the vehicle’s factory exhaust controls.
Constructed from durable 409S stainless steel tubing, the system uses large 3.00-inch mandrel-bent tubing for high-flow performance, strength, and long-term corrosion resistance. Integrated high-quality exhaust valves accommodate the factory exhaust actuators, allowing the system to work with the vehicle’s active exhaust functionality. The polished quad 4.00-inch 304 stainless steel tips provide a clean, aggressive finish that complements the Mustang’s performance styling.
The Flowmaster 817825 exhaust system is engineered for a straightforward installation using the factory hanger locations. All necessary components, mounting hardware, and detailed installation instructions are included, making it suitable for a professional installation or a carefully completed home project. This complete axle-back system is designed specifically for 5.0L Mustang GT coupes and convertibles with factory Active Performance Exhaust valves and is backed by Flowmaster’s Lifetime Limited Warranty.

Features:

• Vehicle Fitment: Fits 2018-2023 Ford Mustang GT 5.0L coupes and convertibles equipped with the factory Active Performance Exhaust option

• Exhaust Sound: Provides an aggressive exterior sound with a noticeable interior tone

• Muffler Design: Includes race-proven Outlaw Series straight-through mufflers

• Exhaust Valves: Uses high-quality valves compatible with the factory exhaust actuators

• Tubing: Features large 3.00-inch mandrel-bent 409S stainless steel tubing for high-flow performance

• Exhaust Tips: Includes polished quad 4.00-inch 304 stainless steel tips

• Performance: Dyno-tuned to support maximum exhaust performance

• Construction: Full stainless steel construction for durability and longevity

• Installation: Uses factory hanger locations and includes required hardware and detailed instructions

• Warranty: Covered by Flowmaster’s Lifetime Limited Warranty

Fitment:
Ford Mustang Bullitt 2019
Ford Mustang Bullitt 2020
Ford Mustang GT 2018
Ford Mustang GT 2019
Ford Mustang GT 2020
Ford Mustang GT 2021
Ford Mustang GT 2022
Ford Mustang GT 2023
Ford Mustang GT Premium 2018
Ford Mustang GT Premium 2019
Ford Mustang GT Premium 2020
Ford Mustang GT Premium 2021
Ford Mustang GT Premium 2022
Ford Mustang GT Premium 2023
Ford Mustang Mach 1 2021
Ford Mustang Mach 1 2022
Ford Mustang Mach 1 2023