11-12 Ford Mustang GT 5.0L V8 Flowmaster 717879 Flow FX Axle-Back Exhaust System

11-12 Ford Mustang GT 5.0L V8 Flowmaster Flow FX Axle-Back Exhaust System

Part Number: 717879

Upgrade the factory exhaust system with the Flowmaster Flow FX Axle-Back Exhaust System, engineered specifically for 2011-2012 Ford Mustang GT 5.0L V8 models and compatible with the 2012 Mustang Boss 302. Designed for enthusiasts seeking an aggressive performance appearance and a deep, refined exhaust note without excessive interior drone, this premium axle-back system delivers a moderate sound level that enhances the driving experience. Large straight-through Flow FX performance mufflers maximize exhaust flow while maintaining excellent street manners, and mandrel-bent 409 stainless steel tubing helps improve exhaust efficiency for enhanced performance. Finished with bold 4.50-inch black ceramic-coated 304 stainless steel tips, this direct-fit system fills the factory exhaust openings for an aggressive, factory-quality appearance. Utilizing factory hanger locations, installation is quick and straightforward with no welding required. Every kit includes the required hardware and installation instructions, making this an outstanding performance upgrade backed by Flowmaster's Lifetime Limited Warranty. 

Key Features

• Direct-fit Flowmaster Flow FX axle-back exhaust system.
• Fits 2011-2012 Ford Mustang GT 5.0L V8 coupes and convertibles.
• Also compatible with the 2012 Ford Mustang Boss 302.
• Straight-through Flow FX large core performance mufflers.
• Dyno-tuned to promote maximum exhaust flow and performance.
• Mandrel-bent 3.00-inch 409 stainless steel tubing.
• Large 4.50-inch black ceramic-coated 304 stainless steel exhaust tips.
• Dual rear exit with embossed Flowmaster logo.
• Uses factory hanger locations for a true bolt-on installation.
• Includes clamps, hardware, and detailed installation instructions.
• Moderate, deep, and powerful performance exhaust tone.
• Lifetime Limited Warranty.

Benefits

• Produces a deeper, more aggressive exhaust note while maintaining a comfortable moderate sound level.
• Straight-through muffler design helps improve exhaust flow for enhanced horsepower and throttle response.
• Premium stainless steel construction provides long-lasting durability and corrosion resistance.
• Large black ceramic-coated exhaust tips deliver an aggressive muscle car appearance.
• Bolt-on installation eliminates the need for welding or extensive modifications.
• Maintains factory-style fitment by utilizing the original mounting locations.
• Ideal for daily driven Mustangs and weekend performance builds.
• Backed by Flowmaster's Lifetime Limited Warranty for long-term confidence.

Product Specifications

• Part Number: 717879
• Product Type: Axle-Back Exhaust System
• Exhaust Series: Flow FX
• Vehicle Application: Performance Street
• Main Pipe Diameter: 3.00 inches
• Pipe Material: 409 Stainless Steel
• Pipe Finish: Natural
• Muffler Style: Straight-Through Absorption
• Muffler Body Material: 409 Stainless Steel
• Muffler Body Shape: Round
• Muffler Body Length: 14.00 inches
• Muffler Overall Length: 35.50 inches
• Muffler Quantity: Two
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Black Ceramic Coated
• Exhaust Tip Color: Black
• Exhaust Tip Diameter: 4.50 inches
• Exhaust Tip Length: 5.25 inches
• Exhaust Tip Shape: Round
• Exhaust Tip Style: Rolled Edge, Angled Cut, Single Wall
• Exit Style: Dual Rear Exit
• Mounting Style: Factory Hanger Locations
• Inlet Style: Clamp-On
• Clamps Included: Yes
• Hangers Included: Yes
• Catalytic Converter Included: No
• Sound Level: Moderate
• Color: Natural tubing with black ceramic-coated tips

Install Difficulty Level

This installation is considered easy for most enthusiasts with basic hand tools. The system is designed as a direct bolt-on replacement that uses the factory hanger locations and supplied clamps without requiring welding or permanent modifications. Under ideal shop conditions, installation can be completed in approximately 30 minutes, making it an excellent weekend performance upgrade.

Vehicle Fitment

• 2011 Ford Mustang GT Coupe – 5.0L V8
• 2011 Ford Mustang GT Convertible – 5.0L V8
• 2012 Ford Mustang GT Coupe – 5.0L V8
• 2012 Ford Mustang GT Convertible – 5.0L V8
• 2012 Ford Mustang Boss 302 – 5.0L V8

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