Roush Axle-Back Exhaust Kit Stainless Steel GT 2011-2014

Roush: 421127
MSRP: $489.99
CJ's Low Price:
$469.99
1430179200 4668
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Product Description

Roush Stainless Steel Axle Back Exhaust Kit for all 2011, 2012, 2013 and 2014 GT Mustangs.

This amazing axle-back exhaust kit from Roush will offer your 2011-2014 5.0-liter Mustang GT a distinct and aggressive sound. The Roush axle-back system is a highly tuned piece of engineering that will avoid the annoying in-cockpit boom, which can occur with other competitive exhaust systems on the market.

Installation is quick, easy, and will use all of the factory hanger locations and pierce points. No modifications to the vehicle are necessary. And all of the hangers are chromed for superior appearance and corrosion resistance. As an added bonus, brand new, high quality OE-spherical clamps are included in the kit to complete the installation without reusing the clamps found on your factory axle-back.

Features and Benefits:
- No Negative Impact on Emission Devices
- Hollow Chamber Yields Higher Airflow
- 4” 304 Stainless Steel Chrome Tips
- Fits Both Ford Factory and Roush Rear Valance
- Higher Air Flow and Less Back Pressure for Increased Horsepower and Torque
- Direct Bolt-In, For an Easy Installation
- Includes All Necessary Hardware and Instructions

*Will also fit 2011-2012 GT500 Mustangs with the stock or Roush rear valance.

Constructed from 409 stainless steel, this axle back exhaust system features an exclusive open-chambered design that will not deteriorate over time, unlike conventional fiberglass roving material. The exhaust tips are made from 304 stainless steel and finished with a unique chrome flashing process. Chrome-flashing on tips provides heat resistance to color change.

Order the Roush Stainless Steel Axle Back Exhaust Kit for your 2011, 2012, 2013 or 2014 Mustang GT from CJ Pony Parts today!

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Mustang Applications

This product will fit the following Ford Mustang years:

Product Reviews

Write a review
1
Roush Axle-Back Exhaust Kit Stainless Steel GT 2011-2014 is rated 5.0 out of 5 by 5.
Rated 5 out of 5 by from Roush Axle Back I installed the Roush Axle Back a few weeks ago on my 2014 Coyote, and I couldnt be happier with the outcome! The kit is pretty quiet during basic driving. (No pesky drone sound when highway driving either!) Its docile up to about 3500rpm, go above that or at WOT, the car sounds like it should! AWESOME product and I highly recommend to anyone Installation took less than 2 hrs and I didnt even have to remove the intermediate pipes to get them on!
Date published: 2015-02-13
Rated 5 out of 5 by from Awesome axle back exhaust Great kit. Came well packaged. The instructions were well done. I had a few hiccups taking off the first muffler but the second one was much easier. Sound is awesome. Also much lighter than stock.
Date published: 2015-01-12
Rated 5 out of 5 by from Roush Axle Back awesome sound Very quick delivery to NZ. Very easy to fit and wow amazing sound over factory exhaust. Increase HP is also very noticeable. Well worth while upgrade and worth every penny. Many thanks CJ's.
Date published: 2015-04-01
Rated 5 out of 5 by from Nice sound This is the best investment ive made so far for my 2011 gt the sound is amazing and it looks awesome makes the stang look mean
Date published: 2015-01-08
Rated 5 out of 5 by from Awesome! Fast shipping only took three days to get them. They look great! Can't wait till this summer to put them on.
Date published: 2015-03-10
  • 2015-04-27T09:12CST
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Product Questions

1

Will the Roush axle back exhaust require a retuning or reprogramming of the engine? Would it be available with black tips?

Asked by: OWATGI
It won't require a tune. Black tips aren't available.
Answered by: CJ Pony Parts
Date published: 2015-03-22
  • 2015-04-27T10:11CST
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Product Video

By Bill Tumas: For many Mustang owners a high-performance exhaust system is the first modification on the list. Besides the obvious performance gains, for many it's about getting that Mustang sound just right. What constitutes "just right" can be very subjective. Many of our customers agree, if you have a 2011-2014 Mustang the Roush Cat-Back is one of the best sounding systems out there. Today we are going to install this system on this 2011 Mustang GT.

The Roush system is completely made out of 409 stainless steel, includes these chrome rolled tips, and comes in an attractive price as well. All the hardware necessary for installation is included. The system is going to give you a nice, aggressive tone and a wide-open and throttle, yet have a nice non-droning sound for normal driving. For this installation you need jack and jack stands or lift, a 3/8 ratchet of impact gun, half-inch deep socket, 15-millimeter deep socket, flat-blade screwdriver, pry bar and safety glasses.

Once you get the back end of your car off the ground, the first step is to remove the factory mufflers. We're going to start by disconnecting the clamps located right here. All this can be done with hand tools, but we're going to use our cordless impact. We're going to remove the passenger side. At this point there is two ways you can get the mufflers off. You can remove the hanger bolts themselves and pull the whole assembly out, or you can unbolt these intermediate pipes, separate the two and then pull the muffler off. We're going to pull the intermediate pipes. Now we are going to separate the intermediate pipe. Now we are going to slide the muffler off the rear hanger. We're going to slide it back off the rear mounts. Now remove the other side in the exact same way.

Now we will install our new mufflers. Make sure you install them with the pipe going towards the inside of the car, hangers going towards the back. Now we will install on the rear hanger. Now we are ready to rehang the intermediate pipe. Let's start by putting the supplied clamp up into place. Now we'll put the intermediate pipe back on. It's a lot easier to put the clamp onto the intermediate and slide it up into place. Now we will line the intermediate up with our new Roush exhaust, clamp over, and tighten it down.

Now we will move on to the passenger side. Now I'll retighten the clamps from the intermediate to the H-pipe. We'll install the clamp onto the tip first, put the tip onto the muffler, and line it up, and then tighten it down. Now we'll install the passenger side in the same way. Line it up and then tighten it down. If you're finding your tip is too close to your valves like ours is here, then loosen the clamp that connects the muffler to the intermediate pipe and twist it outward for more clearance. Our installation is finished.

Our new exhaust looks great. We know most of you aren't buying it for looks, you're buying it for sound. Let's get it outside and see how it sounds. The Roush exhaust gave us a nice aggressive tone, still tame enough for daily driving. Installation should take you no more than an hour; you'll be back on the road in no time.