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Corsa Xtreme Axle-Back Exhaust (11-14 GT; 12-13 BOSS 302)

Market Price $833.99 You Save 12% ($96.99)
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$737.00 (pair)

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  • Item 100512
  • MPN# 14317

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    Features, Video & Details

    • Corsa "Xtreme" Axle-Back
    • Deep Aggressive Sound with No Drone
    • Straight-Through Mufflers Featuring Corsa's Patented RSC Technology
    • 304L Stainless Steel Construction
    • 3" Diameter Mandrel-Bent Tubing
    • Mirror Polished, 4" Pro-Series Tips
    • Made in the USA
    • Fits 2011-2014 GT and 2012-2013 BOSS Mustangs

    Review & Installation Video

    Review & Install Video

    Hey I’m Justin with AmericanMuscle.com, here with my breakdown of the Corsa extreme axle back exhaust system fitting all 2011 and newer Mustangs. Corsa exhaust systems are no doubt one of the nicer options available for any Mustang, in addition to being one of the most advanced. Corsa incorporates the reflective sound cancellation technology or RSC as they call it, and give you the best of both worlds, an exhaust that’s going to be quiet and drone free on the highway while cruising, and one that’s going to absolutely scream and be angry whenever you’re on the throttle. Now if you’re not watching this video on our site already and you want to learn more about that RSC technology or the Corsa in general, just go ahead and click the link below to head back to the product page. Besides the technology that goes into these mufflers the build and quality of materials is also very impressive, the extreme utilizes a 304 grade stainless construction throughout, 3” piping, beautiful welds, and finally these mirror polished 4” tips, etched with the Corsa logo which as you can see do feature a very unique slash cut. Most exhaust will feature a straight up and down slash cut, but you can see the Corsa here utilizes a more side to side cut. That side to side cut actually features and fits the lines of the rear end in my opinion than the straight up and down cuts, just makes for a much cleaner appearance in the rear end. Installation shouldn’t involve anything out of the ordinary and can easily be done in about an hour using some standard hand tools. Before we jump into those sound clips I just want to remind you guys that we always try to bring you the best sound clips and exhaust clips possible, of course you get to hear a bunch of different sound clips in addition to my overviews so if you want to stay up to date with all the latest exhaust vids for your car, in addition to some other great content, just subscribe to our YouTube channel by clicking on the link below. Now let’s hear how the Corsa extreme axle back sounds compared to our factory exhaust.

    Xtreme Aggressive Sound. The Corsa Xtreme axleback system is acoustically styled and engineered to give your Mustang a throaty aggressive sound under acceleration and a deep growl at idle all without interior cabin drone.

    RSC™ Technology. Corsa designs their mufflers using their own patented Reflective Sound Cancellation® Technology (RSC™) to give your Mustang an aggressive sound under acceleration and a drone-free experience while cruising.

    Quality Construction. Corsa Axle-back systems are manufactured in the USA from premium grade 304 stainless steel for a long life and a perfect fit. The system features two straight-through mufflers that end with mirror polished 4" Pro-Series tips, that exit in the stock location for impressive good looks.

    Application. The Corsa Xtreme Axle-Back Exhaust is designed as a direct fit bolt-on upgrade for the 2011-2014 GT and 2012-2013 BOSS Mustangs.

    Fitment: 2011 2012 2013 2014 Details

    What's in the Box
    • (1) Driver Side Muffler Assembly
    • (1) Passenger Side Muffler Assembly
    • (2) Clamps
    Installation Info
    Tech Specs
    Axle-Back Exhaust Specifications
    Piping Material: 304 Stainless Steel Tip Material : Polished 304 Stainless Steel
    Piping Size: 3" Tip Size: 4"
    Muffler Type: Straight-through Fitment: 2011-2014 GT, BOSS
    Will it fit my Mustang?

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    5 Questions / 5 Answers

    Ask a Question

    Will these fit a 2014 rs3 with the Roush valence?

    roushstang

    • The Roush Rear Valance will only work with a Roush cat-back. We cannot guarantee it will work with the Corsa Xtreme Axle-Back Exhaust.

      AshleyK

    Helpful (0)

    I bought the corsa extreme axle backs and want 3 inch exhaust all the way to the headers but cant find over axle pipes that are 3 inch like in the cat back exhaust systems that you can buy. Any ideas?

    kaceyc

    • Unfortunately, we do not offer any 3" over axle pipes at this time. We are constantly getting in new products, so keep checking back to our site!

      AshleyK

    Helpful (0)

    I have the pypes pype bomb super system catback would this be a direct bolt on?

    BrandonB

    • The Corsa Xtreme Axle-Back Exhaust is designed as a direct fit bolt-on upgrade for the 2011-2014 GT and 2012-2013 BOSS Mustangs. It has 3" Diameter Mandrel-Bent Tubing if the sizing matches up then you can use it with your system.

      AM MikeW

    Helpful (0)

    The product description says 3' mandrel bent tubing, does this mean it'll bolt up to my 3' over axle pipes? or do i need to get the factory pipes?

    Taylor98

    • The Corsa Xtreme Axle-Back Exhaust does have 3" diameter mandrel-bent tubing, which would allow you to use a 3" over axle pipe. If you take a look at the product photo, you will be able to see a reduced portion on the pipe. This will allow you to slide the axle back into the over axle pipe and clamp it down.

      AMBob

    Helpful (0)

    What is the difference between the Corsa Xtreme and the Sport Axle-Back?

    Jim

    • The Corsa Extreme and the Corsa Sport are chambered slightly different, which causes a difference in sound level. While the Corsa Sport is a louder exhaust, the Corsa Extreme is much louder and aggressive.

      AMJEFF

    Helpful (0)

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    Customer Reviews (97) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:0-$100

    • Loudness / Volume 4.666667 4.7
    • Exhaust Note 4.924731 4.9
    • Fit & Finish 4.903226 4.9
    • Bang For Your Buck 4.591398 4.6



    • 5/5

      Installation Time: Less than 1 Hour

      June 19, 2018

      Could not be happier!

      Great bang for your buck, great sound, quick professional install. To top it off during my install, one of the Corsa Performance mustangs won the Rev/loudness competition! The Corsa guys were great, plus it was for a great cause, Make-A-Wish/AM2018.

      Taino5oh

      Year: 2011 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      June 13, 2018

      Deep aggressive sound

      I had roush axle back exhaust and then I switched over to corsa and it was the best thing ever

      OsvaldoS

      Year: 2013 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      June 01, 2018

      Corsa Extreme is the way to go!

      Very easy installation, and the sound is beyond words! It puts a smile from ear to ear when I drive it!

      MichelleB

      Year: 2014 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      May 19, 2018

      No drone

      After doing a car delete and pypes bomb, that was just wayyyyy too much drone on the highway it hurt to drive it. So I bit the bullet and splurged on the corsa extremes becaus of all the reviews. And there is NO drone at highway speeds but once you floor it sounds like the world is coming to an end. Plenty of pops and other wonderful noises. One bad thing is my fuel economy went down cuz I'm always flooring it just to hear it.

      Bill

      Year: 2014 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      April 25, 2018

      Review from Corsa Xtreme Axle-Back Exhaust - Black Tips (11-14 GT; 12-13 BOSS 302)

      awesome sound

      easy install, did with x pipe and over axles. the sound is loud at cold start, but mellow at cruise, barely notice, but any time you give it gas, it really screams, I get compliments all the time. I absolutely love the sound. perfect with no drone what so ever.

      Blk13Gt

      Year: 2013 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      April 23, 2018

      So loud!

      Fitment was outstanding, shipment was fast and they are super loud paired up with cat delete h pipe. Wow!

      Ed

      Year: 2014 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      April 21, 2018

      Review from Corsa Xtreme Axle-Back Exhaust - Black Tips (11-14 GT; 12-13 BOSS 302)

      Amazing

      I had the Borla Stingers but traded them for a Jeep Hardtop. I went with these this time around and I like the sound from these better. Zero drones with stock exhaust forward. Aggressive and loud. People rubber neck from the sound alone.

      Chance84

      Year: 2011 Submodel: GT

      Helpful (1)

    • 4/5

      Installation Time: Afternoon

      April 16, 2018

      Amazing exhaust note. Disappointed until….

      I wanted to wait a few weeks before writing my review so that I could list pros and cons. This took longer than my Flowmaster American Thunders to install. Follow the instructions…more things have to be disconnected than with the Flowmasters. It took about 3 hours with help. When I took my first cruise with these, I was both elated and disappointed. The constant drone of the Flowmasters was gone and that was such a huge relief. At WOT it sounded beautiful! Something like a Harley at times and a Nascar at other times (depeding on the gear/rpms maybe). Just incredible. Going under a bridge at WOT made me so happy! However, I felt that the system was pretty close to stock unless I was at WOT. Even sitting at a light with the top down, the exhaust was so quiet. I paid good money for these and…maybe this is just me…I want people to know this is no stock Mustang. I missed the rumble the Flowmasters provided when passing people. I debated what to do for several days. I thought about purchasing the complete catback. Maybe THAT would be louder and make me happy. After all, most of the videos I watched were of the complete catback. Wifey could not comprehend why I was not satisfied with a $700 exhaust. She said I would never be happy with the sound and I insisted that at some point I would be. Deleting the catalytic converters (it is already tuned) was another option and would save a lot of money over purchasing the x pipe from Corsa. I worried that I would seriously regret removing the cats and that my wife would hate the car. It gave me so much anxiety. It's a convertible and I’m not in my twenties after all. Am I going to walk into work smelling like exhaust fumes? I also wanted to run the ghost cam on the weekends and removing the cats is a must if you want to be able to hear...really hear...the cam sound. I figured I could always go back. I finally found a shop that would do the work for $150 and pulled the trigger. I could not be more content. Removing the cats made this exhaust a beast. Best of all, I can still control the volume. When my wife drives the car like a grandma, the exhaust is barely noticeable. Seriously. She did not even notice when she drove it. When I am in the mood (almost always) to hold the gear, let the RPMs run up, and downshift, the car sounds like it eats children! The pops and crackles are great music. I absolutely love it! The ghost cam sounds amazing. When I punch it on the interstate, the sound is unreal. I smile every time. I can switch gears and make it more or less aggressive. If I get a phone call, I can quite it down completely. The cons of this setup are an unbelievably loud cold start for the first ten seconds and an occasional short not-so-refined raspy note that happens maybe once every couple of hours (perhaps when I am in the wrong gear). On the cold start, if you live in an apartment complex and leave in the early morning, you might want to think twice. The houses are pretty close together here and I am waiting to hear from the neighbors LOL. Still, it's less than ten seconds and it calms down. If you are on the fence, buy this exhaust! Corsa knows what’s up! If you are not completely happy, pull those cats off. I wish I would have deleted them day one.

      Stephen

      Year: 2013 Submodel: GT

      Helpful (7)

    • 5/5

      Installation Time: Afternoon

      March 15, 2018

      Corsa Xtreme Axle-Backs

      These mufflers are fantastic. Install was a little tricky due to the bolts being hard to reach. They sound amazing but there’s absolutely no drone inside the cabin at all, even with resonators remover.

      Sheridan

      Year: 2013 Submodel: GT

      Helpful (2)

    • 4/5

      Installation Time: Less than 1 Hour

      March 09, 2018

      CORSA AXLE BACK EXHAUST

      LOOKS AND SOUNDS GOOD! WORTH SPENDING A LITTLE MORE MONEY FOR BRAND NAME!

      TylerK

      Year: 2014 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      February 18, 2018

      Review from Corsa Xtreme Axle-Back Exhaust - Black Tips (11-14 GT; 12-13 BOSS 302)

      Awesome!

      Well worth the money great Quality and Fitment don't regret this purchase.

      RandyS

      Year: 2013 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      February 01, 2018

      Perfect

      These are worth the money. No drone as advertised, quiet at idol and cruising. I installed by myself on my 2013 GT convertible with a couple of jack stands and a roller jack to hold up the exhaust pipe. It took about an hour, dishsoap and a little bending on the hangers did the trick. Stomp on the gas and heads turn, just what a Mustang should sound like.

      RecklessEric

      Year: 2013 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      January 26, 2018

      Amazing!

      Get lots of looks and head turns. Have other drivers complement at stoplights. Ton of theatrics from exhaust note and crackle and pops. Drone is not even close to how bad people make it seem. Honestly if you even care about drone or being loud then you shouldn’t own a mustang.

      RobertM

      Year: 2013 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      January 17, 2018

      Worth the extra money

      I wasn’t sure about the extreme or sport. I went back and forth a lot and thought about it a lot before I purchased them. I didn’t want it really loud and I wanted a low rumble but not to soft either. Now that they are installed they’re just about perfect. When just cruising around it’s a low very light rumble. When you step on it and the RPMs climb it is loud. After running them for a week I think the sports may have been too quiet when cruising. I’m not sure though because I haven’t heard the sports. The video clips are really hard to judge the sound by. The quality is very impressive. They match up perfectly. However, don’t go by what the installation videos say “should take about an hour” to install. Maybe with a lift, air tools, helper and about 10 other previous installations. Plan on 2-3 hours at a minimum with help if doing it on the garage floor with the back jacked up. Oh, by the way, take off the mid pipes. It will be much easier if you do. Also, if you have a lift then the mid pipes will come completely out. If not then at least unbolt them and slide them off to the side. The driver side is much harder to remove and reinstall the axleback then the passenger side. All in all I’m happy with them so far. They sound good. Just be careful where you step on the throttle and open it up you will draw attention to yourself.

      Craig

      Year: 2014 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      January 09, 2018

      Love them

      Had Corsa Xtremes on my 2009 Mustang GT and was worth every dollar. Purchased again for my 2013 GT/CS and still accelerate down the road with the cheesiest smile on my face.

      GaryH

      Year: 2013 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      January 04, 2018

      Review from Corsa Xtreme Axle-Back Exhaust - Black Tips (11-14 GT; 12-13 BOSS 302)

      Wow

      I love this dang exhaust. Paired with my off-road x pipe, gosh this thing is loud, and has a beautiful tone! Not raspy like everyone says it is, I compare it to the wail of an Indy 500 car. Can’t wait to get the resonators off to really let this thing scream!

      Isaiah

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      December 04, 2017

      Amazing sound.

      This exhaust will have heads TURNING! Best item I invested in besides the JLT CAI.

      JuanD

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 29, 2017

      Review from Corsa Xtreme Axle-Back Exhaust - Black Tips (11-14 GT; 12-13 BOSS 302)

      Awesome Sound

      They look and sound excellent, don't regret the purchase. Took like 40 min to install, in some cases welding or tube extension are required.

      Magrax

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 16, 2017

      You get what you pay for!!

      What can i say? This exhaust will make your car SCREAM! I combined this exhaust with my kooks longtube headers and the kooks catted x pipe and wow! It screams! It’s a loud exhaust but very quite when you’re on a high gear! And there is no drone at all! I highly recommend this exhaust! 5 stars for sure!

      DanielV

      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 13, 2017

      Review from Corsa Xtreme Axle-Back Exhaust - Black Tips (11-14 GT; 12-13 BOSS 302)

      Corsa extreme axle-back

      I had high expectations and they exceeded every single one.

      Guy

      Year: 2013 Submodel: GT

      Helpful (2)

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