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2011-14 Mustang 5.0L 5.4L Roush Axle-Back Exhaust Kit GT-GT500 - S197

Overview   |  Benefits   |  Features   |  In the Box   |  Description   |  Customer Photos   |  Reviews
Mustang Roush Axle-Back Exhaust Kit (11-14) 5.0L 5.4L

Add horsepower & torque in your 2011-2014 Mustang GT/GT500 with a Roush axle back exhaust system.

Item# RSH-421127

Everyday Low Price: $469.99

In Stock!  


  • Upgraded Aggressive Sound Tone Volume
  • Fits Both Ford Factory & Roush Rear Valance


  • 409 Stainless Steel Pipes And Muffler
  • Unique Open-Chambered Design
  • 304 Stainless Steel Exhaust Tips With Chrome Flashing
  • Does Not Negatively Affect Emissions
  • Provides Higher Air Flow
  • No In-Cockpit Boom

What's in the Box

  • (2) Axle-Back Muffler W/ Hangers
  • (2) Polished Tips
  • (4) Band Clamps

Made in the USA

Product Description

Give your 2011-14 5.0L Mustang the wild howl of American V8 muscle that it deserves. This innovative new exhaust system from ROUSH features a hollow muffler chamber, as opposed to conventional fiberglass-packing. The result is a unique and less inhibited sound, increased air flow, and increased longevity (there is no fiberglass that will break-down with time). Another great feature of this system is the lack of the in-cockpit boom normally found with performance exhaust systems at cruising speeds.

Not only does this exhaust sound good, it looks good as well. The round tips are made from high-quality 304 stainless steel and are finished with a chrome flashing process. Conventional chrome plating uses layers of bonded chemicals to achieve its shiny appearance, which are susceptible to cracking and flaking especially when exposed to high temperatures (like exhaust). However, the chrome flashing used in this system is bonded micro-porously to the metal surface, and is as a result impervious to cracking from localized damage. This method of chroming is also resistant to heat color change.

As you would expect, the installation of this system is quick and easy. The exhaust uses the factory hanger mountings, so you don't have to fabricate your own. This kit also features new OE-quality spherical clamps for a better fit.

(5) Customer Photos

Customer Reviews

5 out of 5 stars - based on 3 reviews

  Music to my ears!!
By on 3/11/2014
Ordered this exhaust for my 14' GT/CS on a Wednesday afternoon and received it in the mail less than 24hrs later! Got it installed in about 25 minutes using a lift and the fitment was spot on. First cold startup and your welcomed with the sweet sound of horsepower music. Just flat out heavenly. Ahhhh.... Once the car warms up, you're left with a nice low and throaty idle. Step on the gas a little and you're fed a rich muscle car tone with a sprinkle of that notorious mustang sound. Beautiful. And then there's the WOT.... bliss, just bliss. Its how a mustang should sound. Overall, very pleased with this axleback, it has a great fit and finish, superb sound, and a fair price. Hats off to Roush.

Yes, I would recommend this item to a friend!

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  Great Product
By on 3/13/2014
Easy install took about 20 minutes. Very fast shipping .. Sounds great, very aggressive. Thanks Latemodel Restoration, you guys rock!!

Yes, I would recommend this item to a friend!

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By on 4/7/2014
This was my first mod for my 2012 mustang yellow blaze gt/cs and it is AMAZING!!! It makes the best muscle car rumble I have ever heard. I would recommend for anyone who is wondering about this product.

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 2011 (11) - 2012 (12) - 2013 (13) - 2014 (14)

About This Brand

Roush - The Art of Performance Engineering
ROUSH Performance is the first specialty-vehicle company to combine race-proven technologies with advanced automotive engineering. The result, a unique mix of street car and race car...Is a ROUSH car. Or more specifically, a ROUSH Mustang or F-150 pickup with styling, performance, and handling characteristics derived from the racetrack and modified for street legal usage. The vehicles and components produced by ROUSH Performance are imprinted with Jack Roush's vision, passion for performance, and commitment to excellence. He personally approves the design, engineering, fit, finish and overall performance of each package, ensuring that his personal standards are met prior to production and product release. Many of these products are designed by the same engineering group that has helped Roush Racing become the winningest Ford racing team in history.

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