18-23 Ford Mustang GT 5.0L V8 Flowmaster 817825 Outlaw Axle-back Exhaust System

Flowmaster 817825 Outlaw Axle-Back Exhaust System

The Flowmaster 817825 Outlaw Axle-Back Exhaust System is engineered for 2018-2023 Ford Mustang GT 5.0L models equipped with the Factory Active Performance Exhaust Valves. Designed for enthusiasts seeking an aggressive exhaust tone and performance-inspired appearance, this system features race-proven Outlaw Series mufflers, high-flow 409S stainless steel tubing, and polished quad exhaust tips for a bold upgrade that enhances the look and sound of the Mustang GT. The axle-back design uses factory hanger locations and includes components required for an easy at-home installation while maintaining compatibility with the factory exhaust actuators.

Key Features

• Specifically designed for 2018-2023 Ford Mustang GT 5.0L coupes and convertibles with Factory Active Performance Exhaust Valves.
• Race-proven Flowmaster Outlaw Series mufflers deliver an aggressive exterior sound level with a noticeable interior tone.
• Includes OEM-style exhaust valves to reuse the factory exhaust actuators.
• Large 3.00-inch mandrel-bent 409S stainless steel tubing supports high exhaust flow and long-term durability.
• Polished quad 4.00-inch 304 stainless steel tips provide an aggressive, performance-focused appearance.
• Dyno-tuned for maximum performance.
• Straight-through muffler design promotes efficient exhaust flow.
• Uses factory hanger locations for a straightforward installation.
• Full stainless steel construction provides strength and corrosion resistance.

Benefits

• Provides a bold, aggressive exhaust note designed to complement the Mustang GT 5.0L performance character.
• Enhances the rear appearance of the vehicle with large polished quad exhaust tips.
• Maintains factory-style valve functionality by using OEM-style valves with factory exhaust actuators.
• Offers durable performance construction with stainless steel components built for long-lasting use.
• Includes all necessary parts, hardware, and detailed instructions for a convenient installation experience.
• Backed by Flowmaster's Lifetime Limited Warranty.

Product Specifications

• Brand: Flowmaster
• Product Type: Axle-Back Exhaust System
• Exhaust Series: Outlaw
• Part Type: Exhaust System
• Material: 409 Stainless Steel tubing and muffler construction
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Polished
• Exhaust Tip Color: Silver
• Exhaust Tip Quantity: 4
• Exhaust Tip Diameter: 4.00 inches
• Exhaust Tip Length: 5.25 inches
• Exhaust Tip Shape: Round
• Exhaust Tip Style: Angled cut with double wall construction
• Main Piping Diameter: 3.00 inches
• Muffler Quantity: 2
• Muffler Series: Outlaw
• Muffler Type: Reflection
• Muffler Body Material: 409 Stainless Steel
• Muffler Finish: Black high-temperature paint finish
• Muffler Color: Black
• Muffler Body Shape: Round
• Muffler Overall Length: 49.50 inches
• Valve Type: OEM-style valves
• Valve Actuator: Not included; reuse OEM actuator
• Clamp Type: Flat Band
• Clamps Included: Yes
• Hangers Included: Yes
• Mount Type: Uses factory hangers
• Finish: Natural
• Sound Level: Aggressive
• Catalytic Converter Included: No
  
• California Proposition 65: Yes

Install Difficulty Level

Easy installation. The Flowmaster 817825 Outlaw Axle-Back Exhaust System is designed to use factory hanger locations and includes the required parts, hardware, and detailed instructions to support a convenient installation that can be completed at home.

Vehicle Fitment

2018-2023 Ford Mustang GT Coupe and Convertible with 5.0L V8 engine and Factory Active Performance Exhaust Valves.

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.