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2011-14 Ford Mustang 3.7L - Force II Axle-back Exhaust System 817497YouTube Button

Flowmaster Force II Axle-back Exhaust System

2011-2014 Ford Mustang with 3.7L engine.

PART# 817497

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Moderate sound


Wake up the performance and sound hidden in your 3.7L V6-powered 2011-2014 Ford Mustang with a Flowmaster Force II® exhaust system. These moderate sounding systems retain the dual exhaust system outlets and are designed to replace the original rear mounted mufflers using factory hangers and connections. With easy fit in mind, these systems are mandrel-bent stainless steel for maximum performance and include specially tuned pair of 60 Series™ performance mufflers with large 3.50-inch polished stainless steel tips. As a Force II system, it delivers a moderate exterior tone and a mild interior tone and is suited to the enthusiast who wants a subtle but distinctive performance exhaust note. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. The exhaust is a true bolt-on system, includes everything you need to easily install at home with basic hand tools and is covered by our Lifetime Limited Warranty.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Stainless Steel Tubing
  • Dyno Tuned for Maximum Performance
  • Moderate Exterior Exhaust Tone
  • 60 Series Performance Mufflers
  • Lifetime Limited Warranty
  • Uses the Factory Hangers


Emission Code5
Exhaust SeriesForce II
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)2.25
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity2
Muffler Series60 Series Delta Flow
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelModerate
System TypeAxle-back
Tip Diameter (in)4
Tip Quantity2
Tubing Diameter (in)2.25
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817497



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Fits 2011-2014 Ford Mustang with 3.7L V6 engine.


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