$7,000 Summertime Mustang Build Enter Now!
Talk to a Mustang Expert
1-888-332-7930
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

Roush Extreme Axle-Back Exhaust (05-10 GT, GT500)

Market Price $519.99 You Save 4% ($20.00)
Our Price

$499.99

FREE Shipping
  • Item 387146
  • MPN# 421915

In Stock Ships same business day. Choose options to add to cart

Features, Video & Details

  • Tough, Aggressive Growl
  • Straight-Through High-Flow Resonators
  • 2.5" 409 Aluminized Stainless Steel Tubing
  • 4" 304 Stainless Steel Tips
  • Flash Chromed Dual Wall Tips w/ Roush Logo
  • Fits 2005 to 2010 GT and GT500 Mustangs

Review & Installation Video

Review & Install Video

Hey, what's up everybody? I'm Justin with AmericanMuscle.com, and this is my detailed review of the Magnaflow MF Series Cat-Back Exhaust System, featuring the dual same side exit configuration, which dumps before the passenger rear tire. Available for all 2015 and up, 2.7 liter Ecoboost Powered Supercrew & Supercab F150s. All right, guys, in this video we're going to cover three big topics. We're going to talk sound you can expect here with the Magnaflow MF Series. We're gonna talk about the materials used in this system. And then finally we're gonna do a quick, little walk through of the install itself. And honestly for most of you guys out there, it's going to be one out of three wrenches on the difficulty meter. Nothing too crazy here. So we'll have a little bit more detail coming up on that later on. The Magnaflow MF Series Cat-Back here is going to be a great choice for newer Ecoboost owners out there who are after a really well made system from a quality brand like Magnaflow. You want just a little bit more noise, both inside and outside of the truck. And finally, and maybe more importantly, you want the very cool dual same side exit configuration that will dump before the passenger side rear tire. So again, guys, this is just going to be for someone who wants a little bit more sound, and maybe isn't concerned with being the absolute loudest truck on the block. So with all that said, let's take a close look at this cat-back. Magnaflow is definitely one of those companies that's known for making some pretty solid stuff over all, using 100% stainless steel for the most part. All of which is gonna fit great, and produce some pretty well rounded tone. Now the MF series that I have here certainly checks all of those boxes. And I think you'll find that this is just one of many different offerings for your Ecoboost powered truck here on the site for Magnaflow. This particular option again, that I have in this video, is that very cool dual same side exit that will dump before the passenger side rear tire, much like the older SVT Lightenings. They also offer the same exact system a little longer, that will dump after the rear tire. A little bit more of a traditional configuration. They also have the very popular dual split side exit system, and just a more traditional single side exit system as well. So again, as you can see guys, they have just about something for everyone. Now all these systems that I just mentioned are going to utilize the same MF Series muffler here, guys. So don't expect a huge variation in tone from one system to the next. Instead it's going really just going to boil down to what kind of look you're after with your exhaust, and how much dough you want to spend. As far as a tone you can expect when installing the Magnaflow MF Series here. Well, you guys heard the sound clips. Ultimately you can be the judge. But in my opinion guys, this is one of my favorite exhaust systems for the Ecoboost powered trucks, and here's why. You're getting just a little bit more tone over that factory system. Again, these are Turbo V6 engines. A lot of us guys don't want to really advertise that too much. We know it's not a V8. It'll never sound like a V8. So if you can get something that says, "Hey, I'm not stock. But at the same time, I'm not going to drive the family crazy," well again, this is gonna be a great system for you. Breaking out the wake the neighbors scale, I'm going strong two out of five here, guys. Again, just slightly louder than your factory system. Interior noise is practically non-existent. So a perfect choice for a daily driver, or family hauler that does see a lot of road trips. But let's talk about how Magnaflow achieves that nice, deep tone here with their cat-backs. And as you might imagine, a lot of it's going to come down to the MF Series mufflers that they incorporate with a lot of their Ecoboost or truck systems in general. You're going to find a perforated tube inside of the actual muffler itself. And also a combination of a stainless steel wrap, and an acoustic material that does a great job of rounding out the sound with their systems. But again, you are getting that nice, deep, rich tone with the Magnaflow here. I like to call it a nice full bodied tone. You're not getting the high end, raspy pitch with the Magnaflow Systems whatsoever. So if that's what you're into, this is a great choice. You're also getting that straight through muffler. Again, you might see a little bit more performance out of the truck with this system. But ultimately when you're adding a cat-back to your newer Ecoboost F150, you're mainly making a sound, and an appearance upgrade more so than a performance upgrade. Breaking down the fine details here with the construction, guys, you're going to find 3 inch mandrel bent tubing. It's a smaller system overall, as you can see. And of course the three a half inch, brightly polished, slash cut tips. They look awesome when installed on a truck. Again, I really dig this style of system. You're looking at 409 grade stainless steel here throughout. Again, they do a great job at reducing corrosion. Help keep the price down slightly compared to those more expensive 304 grade systems. Everything's made in the USA, and everything is backed by a lifetime warranty. On the topic of price, guys. I think you'll find a lot of the Magnaflow options here on the site for you F150 are going to fall on the higher side of the mid-level price range. And what does that mean to you? Well, these things aren't gonna set you back as much as the Corsa stuff or the Borla stuff price for instance, but you are gonna be dropping just south of a 1,000 bucks, which still is a good chunk of change, I'll give you that. But you have to factor in you're getting some pretty solid materials, and a A plus build quality. Now if you really like the dual same side exit configuration, but you have a really tight budget, MBRP is gonna make a few systems that will give you this similar look. It's not gonna be as nice as the Magnaflow. But it will definitely get you there, if that's what you want. As I mentioned at the top of this video here, this is gonna be a simple one out of three wrenches on the difficulty meter when it does come time to get everything bolted up. In fact, removing your factory system, getting this new guy in place here, only gonna take you about an hour or two using some basic hand tools. And by basic, I'm talking 13 and a 15 millimeter socket. Cordless impactor air will certainly help the job go a lot quicker but overall, you can do this thing with basic hand tools on your back if need be. Now this is a Supercrew or Supercab specific truck. So go ahead and remove that factory system first. Get the new Magnaflow in place in reverse order, starting from front to back. And you should be making noise in no time. As an Ecoboost owner myself, I really enjoy the Magnaflow MF Series Cat-Back based on the sound alone. Now again, a lot of us V6 owners don't exactly want to crank up the volume, like the V8 truck owners out there. And if that does sound like you, then I really do think you'll enjoy the system. Pair that with a quality build, the great materials, and the very cool dual same side exit configuration, and again, you've got a great system if you don't mind spending close to 1,000 bucks. So that's my review of the Magnaflow MF Series Cat-Back which you can find right here at AmericanMuscle.com.

Tough, Aggressive Growl. Let your 2005-2010 GT or 2007-2010 Shelby GT500 Mustang growl with a Roush Extreme Axle-Back Exhaust System. This innovative Roush exhaust system features straight-through high-flow resonators, providing increased air flow and that unique tough, guttural sound with no in-cabin exhaust drone.

Quality Roush Construction. Designed for a durable long life and corrosion resistance, the Extreme Axle-Back is constructed from mandrel-bent 2.5" diameter 409 aluminized stainless steel tubing. Utilizing stock mounting points and pre-welded hangers, this axle-back features (2) 4" flash-chromed 304 stainless steel dual wall tips that have been completed with the "ROUSH" logo for impressive looks.

Application. This Roush Extreme Axle-Back Exhaust is designed to fit the 2005-2010 GT and 2007-2010 Shelby GT500 Mustangs with the factory rear valance, not cutting or fabrication required.

Fitment: 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (2) Axle-Back Assemblies
  • (2) Dual Wall Tips
  • (4) Clamps
Installation Info
Tech Specs
Axle-Back Exhaust Specifications
Piping Material: 409 Aluminized Stainless Steel Tip Material : 304 Stainless Steel w/ Chrome Flashing
Piping Size: 2.5" Tip Size: 4"
Muffler Type: Straight-through Fitment: 2005-2009 GT Mustangs
Will it fit my Mustang?
  • GT - 05, 06, 07, 08, 09, 10
  • GT500 - 07, 08, 09, 10

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Best sound ever

Just installed these bad boys on my 07 GT/CS and was blown away with the exhaust note. I've been debating between borla , roush , and flow master and decided to go with roush extreme. Best choice EVER!!!!!! ...

Read More
Helpful (1)

5/5
Sounds badass

Deep, aggressive sound but not noisy enough to make my neighbors hate me. Booms at WOT and remains noticeable at other rpms. It got rid of that whirly toy car sound and replaced it with the sound of a ...

Read More
Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 52 Reviews

Customer Photos (9) Submit Your Photo

View All 9 Photos

You Might Also Like

13 Questions / 6 Answers

Ask a Question

I know that they state 'no in-cabin drone' but want to be sure. My current aftermarket exhaust has a terrible drone between 2K-3K rpm. Do you experience any such in-cabin drone with these?

Pete

  • This exhaust will not cause your vehicle to drone at idle or at highway speeds.

    KevinD92

Helpful (1)

My car is a regular v6 mustang. Will I still be able to use these for my car?

Briana

  • The Roush Extreme Axle-Back Exhaust would require the factory dual exhaust from the GT Mustangs for proper installation as you would need dual exhaust pipes. Additionally, this would require a GT rear bumper, or an altered V6 bumper with the second exhaust cut out. This axle back exhaust would require custom alteration for proper fit on a six cylinder Mustang.

    AMJEFF

Helpful (1)

I have a 09 GT, and when I bought the vehicle used it came with Magnaflow mufflers. Will I need to purchase anything else to replace what's on my car with the Roush axleback? Or will this system just bolt on to my midpipe?

CameronB

  • The Roush Extreme Axle-Back Exhaust will be a direct fit replacement of the OEM axleback, or any aftermarket axlebacks. If your current exhaust is a catback, with magnaflow over axle pipes, this axleback may not fit correctly.

    Rob D

Helpful (0)

Hi, I am in an auto emissions controlled county. With that said, will I have any trouble passing the next emissions test if I put these on my 2006 GT? Does these go on with the stock mufflers or are these in place of the mufflers?

GermanO

  • Generally speaking an axle back does not affect emissions. However, we recommend consulting your local department of transportation or law enforcement agency to be sure. The Roush Extreme Axle-Back Exhaust will replace your factory mufflers.

    VincentV

Helpful (0)

Will this provide any performance gains ?

JacobB

  • Axle backs will not really gain any noticeable power no. You may only see 1-2 horsepower out of an axle back system.

    Ricky36

Helpful (0)

WHICH IS LOUDER, THE AXLE BACK OR CAT BACK ROUSH EXHAUST AND WHICH SOUNDS BETTER.

Roly

  • Hey Roly, Well the catback will be louder because its more piping that you're upgrading from stock, and as in sounding better its more of an opinion and in my opinion the louder the better so that would be the catback.

    Cobra_Machine04

Helpful (0)

More Products You Might Like

Customer Reviews (52) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume 4.8125 4.8
  • Exhaust Note 4.895833 4.9
  • Fit & Finish 4.833333 4.8
  • Bang For Your Buck 4.6875 4.7



  • 5/5

    Installation Time: Less than 1 Hour

    February 15, 2017

    Best sound ever

    Just installed these bad boys on my 07 GT/CS and was blown away with the exhaust note. I've been debating between borla , roush , and flow master and decided to go with roush extreme. Best choice EVER!!!!!! Roush done a very good job designing the exhaust.

    JaylenG

    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 27, 2017

    Sounds badass

    Deep, aggressive sound but not noisy enough to make my neighbors hate me. Booms at WOT and remains noticeable at other rpms. It got rid of that whirly toy car sound and replaced it with the sound of a true GT! Took a bit longer to install because I bought mine used and it wasn't a stock exhaust. Tips are shiny, longer than stock and look awesome

    allthehp

    Year: 2009 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    December 31, 2016

    Aghh, so perfect!

    So when i removed the stock exhaust i just removed the hangers to oull it off, worked pretty well, also dont buy the hangers AM tries to sell you unless you 100 need them, my stock ones were perfect, so check yours! Anyways This exhaust is not obnoxiously loud, it is much deeper, and grumbly, noticable, but people say its the "woah that sounds fast" noticeable. Not the "what the heck is that sound and why is it so loud" noticable. Even at high RPMs it just sounds so low and throaty. I just cant put into words the sound it makes, the recordings dont do it justice. Truly just beautiful.

    WhatIsACamaro

    Year: 2005 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    November 19, 2016

    How the car was meant sound

    I bought my 2006 GT with Flowmasters already on it. I had Bassani cat backs on a 98 GT and was about to order the Bassanis again until I heard the sound of the Roush system on the AM website and opted for the Roush system. I have zero regrets. Any video does not do this system justice. Very deep aggressive sound. Not as loud as I anticipated, but louder than the chambered Flowmasters that were on the car. What really impresses me is how controlled the sound is inside the car. With the windows up there is practically zero drone. Very well designed and sounding system.

    06GAStang

    Year: 2006 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    November 07, 2016

    Tag's Stang

    Great quality and fitment...very easy to install. Also, the sound is incredible...love it!

    TAG

    Year: 2006 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    September 20, 2016

    Awesome sound...brings out the MUSCLE!

    Wow....really brings out the muscle car sound that is missing with the stock exhaust. This is my 4th Mustang, had an 86 GT and an 85 GT with 5.0, and then a 97 Cobra and I was truly missing that sound with my 05 GT. But this exhaust made me do a happy dance and even put a smile on my girlfriends face when she heard it for the first time. It's like Viagra for your 4.6....so don't wast anymore time...order it now.

    JBWilkin

    Year: 2005 Submodel: GT

    Helpful (1)

  • 5/5

    September 12, 2016

    Amazing sound

    The sound the car makes thanks to these exhausts is amazing! The price is not low but it is not high either. I love that you can set the exhaust tips up separately from the pipes. I also noticed a small difference in throttle response, probably just an illusion though. This is probably one of the loudest and nicest sounding axle-backs in my opinion!

    Max

    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    August 15, 2016

    Great note

    Was scard to get these exhausts, afraid they were going to be too loud, but they turned out to sound perfect not too loud not too quiet! Highly recommend

    MasonAtkinson

    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    July 05, 2016

    Looking for that muscle car sound?

    5 stars all the way! Excellent build quality and easy installation. Sound is amazing. Loud under acceleration but quiet while cruising. The only drone you may find would be at around 1700-1800 rpm, but once you get up to highway speed, that goes away. Highway cruising is very quiet. Roush did a fantastic job with engineering this system. Two thumbs up!

    MikeD

    Year: 2008 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Weekend

    June 05, 2016

    Best Ever...

    I paired this with a bbk intake, bbk throttle body, power raid spacer and bbk true dual exhaust x pipe with high flow cats and wow... This is BY FAR the loudest v6 you will ever hear... Absolutely AMAZING

    Kento

    Year: 2005 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 06, 2016

    Perfect

    I switched from Borla Ataks to the Roush Extremes after getting my cams installed. they go perfect with my BBK Longtube headers and Off-road X pipe. no drone, serious sound while idling, and necks snap when you get on the gas. 100 would buy again.

    Mason9405

    Year: 2008 Submodel: Bullitt

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    April 07, 2016

    Awesome

    Installed on my 2010 GT and it sounds great. Sounds like a mustang should. Deep growl and not raspy at all. Also, I have noticed no droning on the highway. Roush did a fantastic job with this exhaust.

    Yeah

    Year: 2010 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    March 07, 2016

    Awesome sound

    Didn't want to sound like all the others with borla or flowmasters!! Roush axle back are easy to install(less than an hour) even for someone with little mechanical knowledge. The difference it made is amazing

    06PONYGT

    Year: 2006 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    February 22, 2016

    Roush Extreme Axle-back

    This was my first mod along with an Airaid CAI/Bama tuner combo on my 2005 GT a couple of weeks ago when I finally hit 50k miles. I couldn't believe the increase in performance and race car growl that such an easy self install could achieve. I installed the Extreme axle-backs without even using a jack, and if it weren't for the two quarter-inch nubs welded onto the ends of the stock over-axle pipes then I would have been done in under an hour. Unfortunately, I spent an extra hour on each side with a hand diamand file and went to work grinding the nubs off because I didn't want to cut the new Roush pipes to account for those tiny but mighty welds like Ford did with the stock mufflers. Other than that, taking out the stock mufflers and installing the Extremes was a piece of cake, but I did uninstall the stock hangers to make the process much easier than the instructions that come from Roush (I doubt removing the over axle pipes is easier or less time consuming even if you have a lift than just simply unplugging a couple of bolts on the hangers laying on your back anyway). The fit and finish of these is superb, and I liked the idea that the tips had their own worm gears for small adjustments independent of the pipes. My car sounds absolutely amazing now when I want it to. It's also fairly stock-quiet when I go easy and want to listen to the radio (which is hardly ever anymore). It has turned more heads than I can count in the last couple of weeks than the past ten years that I have owned it. I'm very impressed and I don't regret the purchase at all, and American Muscle/Bama were first rate in the entire process.

    RedGT

    Year: 2005 Submodel: GT Palm Bay, FL

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    December 10, 2015

    Awesome

    Didn't realize how quiet the stock exhaust was until I got the Roush Extremes installed. Now I don't know how I ever lived without them! Has a mean raspy growl that will instantly put a smile on anyone's face. Looks great too!

    RedBaron2006

    Year: 2006 Submodel: GT NC

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    September 24, 2015

    Perfect for my 2010 Custom Supercharged Roush

    I was looking for a Roush exhaust for my 2010. I did not want the cat back off road. I stop at Roush in Aug. For there open house. They said the Extreme exhaust was redesign and will be GREAT for your 2010. And we're they right. I feel the Mustang breathes better, runs better, and sounds better. Way to go Roush. Thank you for make my mustang a whole lot MORE FUN. Not just for 05-09 any more. Now 2010 can ENJOY!

    PonyExps

    Year: 2010 Submodel: GT Germantown WI.

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 18, 2015

    These will make your Stang sound mean!

    Moved up from an older Flowmaster system. So much louder, but not annoying. I have the Roush Axle-back on my 2011 as well. It sounds a bit better with the 5.0 versus the 4.6, but I do feel it's the best sound I heard on the 4.6. Nice deep tone. I would highly recommend this setup for anyone looking for a meaner sounding mustang. Go for it!!

    vballman

    Year: 2007 Submodel: GT Central PA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    June 15, 2015

    OMG BETTER THAN BORLA

    This axle back is the best when I say I turn head at lights I turn heads I traded my borla atks for these it was the best upgrade I did and I will do it again thank you so much AM do your self a favor and buy these roush it's only right

    Savage

    Year: 2007 Submodel: GT Riverdale, GA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    July 12, 2017

    Awesome Sound

    Awesome sound. These babies rumble and people will hear you before they see you. Love the aggressive sound. Bolted right on with no problem.

    mustanglady

    Year: 2006 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    July 10, 2017

    Hit the mark!

    Exactly the tone I was looking for! Installation went a little longer due to getting the OEM mufflers off but all in all, pretty easy install. More like 3 hours. With some help I could have cut the time in half.

    ChrisL

    Year: 2008 Submodel: GT

    Helpful (0)

Related Mustang Categories