11-14 Ford Mustang 3.7L V6 Flowmaster 817497 Force II Axle-back Exhaust System

Flowmaster Force II Axle-Back Exhaust System

Part Number: 817497

The Flowmaster Force II Axle-Back Exhaust System delivers a refined performance upgrade for the 2011-2014 Ford Mustang equipped with the 3.7L V6 engine. Designed for enthusiasts who want a noticeable improvement in exhaust tone without excessive cabin noise, this system provides a moderate exterior sound with a mild interior tone. The precision-engineered axle-back design replaces the factory rear mufflers while maintaining the vehicle’s dual exhaust layout, providing an aggressive yet street-friendly appearance and sound. With mandrel-bent stainless steel tubing, dyno-tuned performance mufflers, and large polished exhaust tips, this Flowmaster system enhances the Mustang’s performance character while offering long-term durability. The bolt-on design uses factory hangers and included hardware for a straightforward installation and is backed by a Lifetime Limited Warranty for added confidence.

Key Features

• Flowmaster Force II performance axle-back exhaust system designed for 2011-2014 Ford Mustang 3.7L V6 models
• Moderate exterior exhaust tone with a mild interior sound level for comfortable daily driving
• Includes specially tuned 60 Series Delta Flow performance mufflers
• Mandrel-bent 16-gauge stainless steel tubing helps maximize exhaust flow and durability
• Dyno-tuned design engineered for improved exhaust performance
• Maintains the factory dual rear exhaust outlet configuration
• Includes hangers and hardware for a simple bolt-on installation
• Uses factory exhaust hanger locations for proper fitment
• Large polished stainless steel exhaust tips provide an upgraded performance appearance

Benefits

• Improves the Mustang V6 driving experience with a deeper, more distinctive exhaust note
• Provides enhanced throttle response and performance-focused exhaust flow
• Offers a balanced sound level suitable for street use without an overly aggressive tone
• Delivers the durability expected from a premium stainless steel performance exhaust system
• Provides a clean custom appearance with polished dual exhaust tips
• Allows installation using basic hand tools without requiring major exhaust modifications
• Covered by Flowmaster’s Lifetime Limited Warranty for long-lasting product support

Product Specifications

• Brand: Flowmaster
• Part Number: 817497
• Product Type: Axle-Back Exhaust System
• Exhaust Series: Force II
• Vehicle Drive Type: 2WD
• Material: 409 Stainless Steel piping and muffler bodies
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Polished
• Exhaust Tip Color: Silver
• Exhaust Tip Diameter: 4.00 inches
• Exhaust Tip Length: 7.5 inches
• Exhaust Tip Quantity: 2
• Exhaust Exit Style: Dual Out Rear
• Main Piping Diameter: 2.25 inches
• Inlet Diameter: 2.25 inches
• Tail Pipe Outlet Diameter: 2.50 inches
• Muffler Type: Chambered 60 Series Delta Flow
• Muffler Quantity: 2
• Muffler Body Shape: Oval
• Muffler Body Dimensions: Approximately 5.00 inches high x 13.00 inches long x 10.00 inches wide
• Muffler Finish: Black high-temperature paint finish
• Sound Level: Moderate
• Installation Type: Clamp-on axle-back system
• Catalytic Converter Included: No
• Valve Included: No
• California Proposition 65 Warning: Contains chemicals including chromium (hexavalent compounds) and nickel (metallic)

Install Difficulty level

This Flowmaster Force II Axle-Back Exhaust System is designed for an easy bolt-on installation using factory mounting points and included hardware. Installation can typically be completed in approximately 1 hour with basic hand tools, making it a manageable upgrade for enthusiasts with basic mechanical experience.

Vehicle Fitment

• 2011-2014 Ford Mustang
• Engine: 3.7L V6

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