15-17 Ford Mustang GT 5.0L V8 Flowmaster 817734 Outlaw Cat-back Exhaust System

Flowmaster Outlaw Cat-back Exhaust System - Part Number 817734

The Flowmaster Outlaw Cat-back Exhaust System (817734) is engineered for 2015-2017 Ford Mustang GT 5.0L V8 coupe owners seeking a powerful, race-inspired exhaust tone with performance-focused airflow. This bolt-on exhaust upgrade delivers a deep, very aggressive interior and exterior sound while enhancing the appearance and presence of the Mustang. The system features Flowmaster’s exclusive dual 3.00-inch Scavenger Series X-pipe, race-proven Outlaw Series mufflers, and mandrel-bent stainless steel tubing designed for improved exhaust flow and maximum performance potential. The complete cat-back design uses factory hanger locations and includes the necessary hardware for a straightforward installation.

Key Features

• Exclusive Flowmaster Scavenger Series dual 3.00-inch X-pipe design for optimized exhaust flow and performance sound.
• Race-proven Outlaw Series reflection mufflers provide a deep and aggressive exhaust note.
• Dyno-tuned design developed for maximum performance capability.
• Dual 3.00-inch mandrel-bent exhaust tubing supports improved airflow.
• Large 4.00-inch polished stainless steel exhaust tips provide a premium performance appearance.
• Uses factory hanger locations for an easier bolt-on installation.
• Durable stainless steel construction built for long-term performance use.

Benefits

• Creates an aggressive muscle car exhaust tone that enhances the driving experience inside and outside the vehicle.
• Improves exhaust flow characteristics compared with restrictive factory exhaust components.
• Provides a performance-focused appearance with polished stainless steel tips and dual rear exit styling.
• Offers a direct-fit cat-back solution designed specifically for the Mustang GT 5.0L coupe platform.
• Includes Flowmaster’s Lifetime Limited Warranty for added product confidence and long-term protection.

Product Specifications

• Brand: Flowmaster
• Part Number: 817734
• Product Type: Cat-back Exhaust System
• Exhaust Series: Outlaw
• Sound Level: Aggressive
• Material: 409 Stainless Steel Exhaust Tubing and Muffler Bodies
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Polished Silver
• Exhaust Tip Diameter: 4.00 inches
• Exhaust Tip Quantity: 2
• Main Piping Diameter: 3.00 inches
• Tail Pipe Diameter: 3.00 inches
• Exit Style: Dual Out Rear
• Muffler Quantity: 2
• Muffler Style: Outlaw Reflection Chambered Mufflers
• Muffler Dimensions: 10.50 inches length x 4.00 inches width x 4.00 inches height
• Muffler Finish: Black High-Temperature Paint Finish
• Clamping Type: Flat Band Clamps Included
• Catalytic Converter Included: No
• Valve Included: No
• Color: Natural Stainless Steel with Polished Silver Tips

Install Difficulty level

This Flowmaster Outlaw Cat-back Exhaust System is designed for an easy bolt-on installation using factory hanger locations and included hardware. Installation can typically be completed in approximately 1 hour by a person with basic mechanical skills and proper tools.

Vehicle Fitment

• 2015-2017 Ford Mustang GT Coupe
• Engine: 5.0L V8
• Body Style: Coupe Only
• Important Fitment Note: Does not fit Ford Mustang convertible models.

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