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2011-12 Ford Mustang 5.0L Flowmaster Force 2 Axle-Back Exhaust System GT - S197

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Mustang Flowmaster Force 2 Axle-Back Exhaust System (11-12) 5.0L
Give your 11-14 Mustang GT 5.0 an aggressive sound & more power with a Flowmaster Force 2 axle back exhaust!

Item# FLO-817503

Your Price: $561.99

Market Price:$618.18
You Save 10.00 % ($56.19)

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  • Increased Horsepower & Fuel Economy
  • Mild Sound
  • Direct Bolt On Installation
  • 14lbs Lighter Than Stock Axle-Back!


  • Stainless Steel Construction
  • Utilizes Factory Hanger Mounts
  • Easy, Clamp-On Design
  • Flowmaster Lifetime Warranty
  • Polished 4" Tips
  • Made in the USA

What's in the Box

  • (1) Flowmaster 3" Axle-Back Pair

Made in the USA

Product Description

Looking to get increased performance from your red hot 2011-2012 5.0 Mustang? The Flowmaster 817503 Force II Axle-back system for the 2011-12 Ford Mustang GTs with 5.0L engine ups the ante with increased horsepower, torque and mileage from these impressive machines. Intended for Mustang Owners looking for the performance benefits of a Flowmaster system, but with a quieter tone, the 817503 Force II axle back system features specially tuned mufflers that produce the Flowmaster signature sound, providing a deep exterior sound level while maintaining a mild sound level inside the car.

The system is constructed with 409S stainless steel for maximum durability and includes cool 4.00-inch diameter polished tips with embossed logo that exit through the factory rear valence cutouts. The kit is a true bolt-on and includes everything needed to easily install at home with basic hand tools.

Manufactured in the USA, the system is backed by the Flowmaster Limited Lifetime Warranty.

Product Videos

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Vehicle Applications

Ford Mustang - 2011 (11) - 2012 (12)

About This Brand

Flowmaster - The Exhaust Technology Company
Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's.

Through use of these dyno's, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground."

Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's dedication to quality is what makes them the exhaust industry leader for Latemodel Mustangs and SVT Lightnings!

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