Wake up the performance and sound hidden in your V6-powered 2011 to 2014 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 for maximum performance and include specially tuned mufflers. 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 exhaust note. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. The kit is a true bolt-on and includes everything you need to easily install at home with basic hand tools.
Features:
- Mandrel Bent 16ga 409 Stainless Tubing
- Limited Lifetime Warranty
- Moderate Exterior Exhaust Tone
- Incl. Hangers and Hardware For Easy Installation
- Axle Back System
- Dual Out Rear Exit
- Dyno Tuned for Maximum Performance
- Premium Flowmaster Quality
Holley Performance Emission Code 5: 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
Installation Notes:
Fits 2011-2014 Ford Mustang with 3.7L V6 engine.

About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make |
Model |
Submodel |
Years |
Engine |
Fitment Notes |
Ford |
Mustang |
Base |
2011 |
3.7L / 227 / V6 |
Dual; Dual Rear Exit; Incl. 2.25 in. Tubing/60 Series(TM) Muffler/4 in. Polished Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2012 |
3.7L / 227 / V6 |
Dual; Dual Rear Exit; Incl. 2.25 in. Tubing/60 Series(TM) Muffler/4 in. Polished Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2013 |
3.7L / 227 / V6 |
Dual; Dual Rear Exit; Incl. 2.25 in. Tubing/60 Series(TM) Muffler/4 in. Polished Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2014 |
3.7L / 227 / V6 |
Dual; Dual Rear Exit; Incl. 2.25 in. Tubing/60 Series(TM) Muffler/4 in. Polished Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Boss 302 |
2013 |
5.0L / 302 / V8 |
Dual; Dual Rear Exit; Incl. 2.25 in. Tubing/60 Series(TM) Muffler/4 in. Polished Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant |