Mustang Exhaust with Round Tips (2011-2014)

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Part #: 421127
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Product Features

  • For 5.0L V8 engine 2011-2014
  • Upgraded aggressive sound tone and volume
  • Unique open-chambered design
  • Provides higher air flow and less back pressure for increased horsepower and torque
  • 409 stainless steel pipes and muffler
  • 304 stainless steel exhaust tips with chrome flashing
  • Does not negatively affect emissions
  • No in-cockpit boom
  • Fits ROUSH 2010-2011 Mustang Rear Valance
  • Part #421127
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Your Mustang Exhaust will never sound better.

The ROUSH® 2011-2014 Mustang Exhaust Kit with Round Tips is a innovative new exhaust system from ROUSH that features a open-chambered design muffler, as opposed to conventional fiberglass-packing.

The result is a exhaust for the Mustang that delivers a unique and less inhibited sound, increased longevity (there is no fiberglass that will break-down with time) and increased air flow for increased horsepower and torque by increasing airflow and reducing back pressure. Another added benefit of this system is the lack of the in-cockpit boom normally found with performance exhaust systems at cruising speeds.

Not only does the ROUSH 2011-2014 Mustang 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.

The mufflers and inlet pipe are made from 409 stainless steel for increased durability. This kit carries a 3 year limited warranty.

This Mustang Exhaust is quick and easy to install and 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. This kit has no negative effect on emissions.

Hear It For Yourself!

Click on a sound clip below to hear what this exhaust sounds like:

Compare the above ROUSH exhaust recordings to the stock 2011 5.0L Mustang exhaust recordings below:

Mustang: 2014, 2013, 2012, 2011

  • Difficulty: Intermediate
  • Time: 1 hour
  • Required Tools: Garage tools

Customer Reviews:

Average Rating: 5 / 5
Rating of 5 out of 5 stars
(12 reviews)   >> Write a review

2013 Roush axle back

Rating of 5 out of 5 stars 5 / 5

By   September 18th, 2012

I ordered my exhaust thru a dealer and it arrived in a timely manner despite a hurricane! Unpacked everything and it looked great even in the box. I had my car on a lift which made everything a lot easier.Removed the heavy stock exhaust and started bolting up the Roush exhaust. With only a little tweak to center the tips evenly, it went on without any issues at all. A 30 min or less install. Lowered the car and started it up, wow! Nice rumble @idle, a few revs, Im impressed. Did a road test, at cruise speeds there was no obnoxious drone or popping of any sort. A spirited run thru the gears yields a nice bad ass sound, yet when just driving normal it is not overbearing or any in cabin drone that many systems will give. I am very satisfied. Thanks Roush!!

Great Look and Sound

Rating of 5 out of 5 stars 5 / 5

By   September 20th, 2012

Really a great sound. The tips set off the back end. People hear me now.

2013 Boss 302

Rating of 5 out of 5 stars 5 / 5

By   November 6th, 2012

I was looking for an Axle Back exhaust that would enhance the already powerful Boss 302. The Roush's are awesome. Loud, lighter than stock and I can feel the performance increase. I"m sure my Mustang breathes easier. The exhaust note is much deeper. A true Muscle Car sound. There is a drone at 2000 rpm in 6th; However, I can shift out of that and I don't spend much time in 6th anyway. Also, the chrome tips look much better than the stock tips. More aggressive look. If you are looking for loud, then look no further. Customer Service at Roush is also great.

WOW, SUPER

Rating of 5 out of 5 stars 5 / 5

By   November 22nd, 2012

All I can say, is WOW!!! I put mine on in the driveway with just two ramps in less than an hour. Couldn' believe how easy( after I figured out the clips) it was to install. I've heard other makes and Roush has them beat by a mile or should I say 1/4 mile. Great product.

WOW, SUPER

Rating of 5 out of 5 stars 5 / 5

By   November 22nd, 2012

All I can say, is WOW!!! I put mine on in the driveway with just two ramps in less than an hour. Couldn' believe how easy( after I figured out the clips) it was to install. I've heard other makes and Roush has them beat by a mile or should I say 1/4 mile. Great product.

Roush exhaust for 2013GT

Rating of 5 out of 5 stars 5 / 5

By   December 17th, 2012

Ordered this exhaust and it was on my doorstep in 3 days. I had it installed at my local ford dealer and installation took less than one hour. Looks great, the tips are about 1" longer than the stock, and angled more, which give the car a better look. They don't make much noise while in idle, but when you put your foot down they come to life. I searched high and low for a great sounding exhaust and I believe this to be the best available for 5.0's. While at the local dealer the GM heard the exhaust and was so impressed that he is going to order a set this week for his 09' GT500. Thanks Roush for a great sounding product.

My 2013 Mustang GT Never Sounded Better!!

Rating of 5 out of 5 stars 5 / 5

By   January 12th, 2013

IMHO: The pair of Round Tip Exhaust Mufflers are the Perfect Compliment to the '13 GT. At 420HP Stock, this American Muscle is meant to be flexed & the ROUSH Exhaust makes the Mustang "Sound & Feel" like YOU "Feel" when you drive the car...Sorry if that's a bit much - but...This is my 4th Mustang GT: 2000, 2004, 2010 & 2013. -This is the best ever thanks to the increased HP (My first 5.0, too!) & the sound quality added by ROUSH. These Exhaust Tips earned me multiple thumbs up on the NY State Thruway within 1 hour of installation! I Ordered my Kit late Tuesday afternoon & arrived by 9am Saturday Morning to Buffalo...Customer Care is phenomenal at ROUSH...kudos to the ROUSH Team!! Installation was less than one hour. Thank you for everything!!

Lights up the road

Rating of 5 out of 5 stars 5 / 5

By   March 30th, 2013

Just had my Roush axle back installed on my 11'GT and the heads started turning. A very aggressive sound when you push the pedal and an easy pur on cruise control. I just couldn't have asked for better, i spent all day just listening to the rumble and trust me it can't get better than a Roush, and I have seen and heard the Borla as well. Roush any day, Kudos guys!!

Looks and sounds freakin awesome

Rating of 5 out of 5 stars 5 / 5

By   May 16th, 2013

I bought this kit and had my local dealer install it on my 2013 GT , totally impressed by the quality and sound of Roush. I've gotten several compliments on the sweet exhaust note. Once you get to around 4000 rpm the mufflers really open up and the exhaust screams back at you. Don't hesitate to buy this kit....

Sound to Match the Beast!

Rating of 5 out of 5 stars 5 / 5

By   June 5th, 2013

I spent a great deal of time hearing varying mufflers. Some were too raspy or tinny, while others had a drone. Not the Roush axel backs. There is no drone and the car sounds exactly as it should have from the factory! Under hard acceleration the car growls, but the faint melodious sounds at idle and on the highway allow you to carry on a conversation, or hear the radio or a phone call. On the other hand, roll down the windows and "light 'em up" and you won't need any music to keep you entertained as the car sounds INCREDIBLE! The first set of mufflers were edge welded and without a weeper hole and failed after 2 years, but Roush has improved the design with rolled edges and a pre-drilled weep hole. Chris with Roush's warranty department explained what I needed to do and made it easy. The installation took a little over an hour because the driver side muffler needed some persuasion. For those who aren't afraid to hear their mustang's potent engine, these are the mufflers for you! I highly recommend them!

ROUSH EXHAUST

Rating of 5 out of 5 stars 5 / 5

By   September 9th, 2013

2013 GT STANG WOW WHAT A UPGRADE!!! SOUND IS AWESOME ON THIS UNIT. NO BETTER UPGRADE FOR THE AMOUNT OF MONEY PAID FOR THIS ITEM. 100% RECOMMENDED.

Awesome!

Rating of 5 out of 5 stars 5 / 5

By   November 20th, 2013

Just had these installed today. Been out driving at all speeds. They sound amazing. Brings the Mustang to life with a sweet rumble, growl, roar. Quiet at highway cruising speeds with no drone. A lovely growl at lower speeds. Loud with accelerations and cold start. Wow, when I started it the first time. It was like music for the ears. You can hear it nicely inside the car without it being too loud. These are definitely attention getters. You won't want to stop driving.

* Please note that prices stated here are only for sales within the continental United States only ordered via the ROUSHperformance.com web site. Prices for other territories, such as Canada, may vary due to shipping fees, duties, and other factors. Please also note that orders placed on the ROUSHperformance.com web site can only be shipped to areas within the continental U.S.