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BBK Varitune Axle-Back Exhaust - Stainless Steel (11-14 GT)

7 Reviews
Our Price

$549.99

  • Item #56241
  • MPN# 41015

  • Market Price $632.49
  • You Save 13% ($82.50)
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Product Videos Customer Photos
Features
  • BBK Varitune Axle-Back with "Adjustable Power Valve"
  • Change from a three to one chamber exhaust for more power and sound
  • 8-10 decibel range difference
  • Stainless steel construction
  • 4" polished 304 stainless steel tips
  • Direct bolt-on, no cutting or welding required
  • Fits 2011-2014 GT Mustangs
Description
Adjustable Sound. This BBK Mustang Axle-Back Exhaust system features BBK's patented tunable Varitune performance mufflers that allow you to change from a mellow three chamber exhaust sound to a rich throaty straight-through exhaust note with just a twist of a wrench, for a 8 to 10 decibel sound level difference!

How It Works. BBK Varitune performance mufflers utilize an internal "Adjustable Power Valve". When in the closed position the valve blocks the exhaust flow forcing it through all three chambers of the muffler for a classic mellow sound. When in the open position the valve "uncorks" the exhaust flow allowing it to take the path of lease resistance to act more like a straight-through muffler for a rich throaty exhaust note. This unique design is perfect for personalizing the power and sound levels of your Mustang to suit your own specific needs.

Stainless Steel Construction. Constructed from highest quality Stainless Steel available, this BBK Performance Axle-Back exhaust system features Varitune chambered mufflers that end with 4" polished 304 stainless tips for impressive looks and sound. The tips exit in the stock locations so no modifications are required to the rear bumper cover.

Application. This BBK Varitune Axle-Back Exhaust is designed as a direct fit bolt-on upgrade for the 2011-2014 GT Mustangs equipped with the 5.0L 32V DOHC V8 Coyote Engine.

Mustang Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) Passenger side muffler assembly
  • (1) Driver side muffler assembly
Installation Info
Will it fit my Mustang?
  • GT - 11, 12, 13, 14

Most Helpful Reviews Read All Reviews

Overall Rating 4.4/5
5/5
Wow, I am amazed

Ladies and Gents, the sound clips and video don't do this exhaust justice. I was a bit concerned with the low number of reviews and very little info online about the BBK Varitune. I had the shop install

Read More
Helpful (1) (0)

3/5
Was kind of disappointed

The mechanic that Installed them said it was a piece of cake, I had informed him about removing the exhaust pipe that had the resonator in them and then swapping out mufflers. I couldn't tell any difference

Read More
Helpful (1) (0)

Videos

Hey Justin with AmericanMuscle.com and I’m here with one of the most exciting new products to come along in sometime. I’m talking about BBK’s Vari-tune fully tunable axle back exhaust system fitting all View Full Transcript

Customer Photos (2) View All Customer Photos

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Q & A (3 Questions, 5 Answers) Ask a Question

Loud Is this exhaust louder with the valve closed compared to the stock pipes?

Jon333 Year: 2013 Model: GT

Good Question (0) (0)
  • Most performance exhaust set ups are louder than the stock system. https://www.youtube.com/watch?v=049wz3ngreg

    Helpful (0) (0)

    VMan Year: 2004 Model: Cobra

    Top 100 Contributor

Show 1 more answer Answer This Question

Is there any drone? Is there any drone when running these mufflers?

Bobt8850 Year: 2013 Model: GT

Good Question (0) (0)
  • no

    Helpful (0) (0)

    robvill773 Year: 2014 Model: GT

Show 1 more answer Answer This Question

How much do these axle-backs weigh? Wanted to know how much these weigh compared to stock. Thanks!

Dewyrussler Year: 2011 Model: GT

Good Question (0) (0)
  • After carrying the box with the bbk varitune and then carrying each stock muffler I can safely say that they are about half as light as the stock, if not very close to it. For sure they are lighter and its apparent as soon as you try to carry them. The exact numbers I am not sure.

    Helpful (0) (0)

    rickdelprado Year: 2014 Model: GT

Answer This Question

Reviews (7) Write a Review

  • 5 Stars .57 57%
  • 4 Stars .29 29%
  • 3 Stars .14 14%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.4

out of 5 stars

6 Customers Recommend this Product

Installation Time:Full Day

Installation Cost:0-$100

  • Loudness / Volume: 4.142857 4.1/5
  • Exhaust Note: 4.428571 4.4/5
  • Fit & Finish: 3.857143 3.9/5
  • Bang For Your Buck: 4.285714 4.3/5
Filter By Sort By
  • 3/5 No, I do not recommend this product

    December 19, 2014

    Was kind of disappointed

    The mechanic that Installed them said it was a piece of cake, I had informed him about removing the exhaust pipe that had the resonator in them and then swapping out mufflers. I couldn't tell any difference with adjusting plug all the way in or all the way out. The sound is really low pitched and soft. When coasting down to a stop the sound reminds me of how an 18 wheeler sounds when it's coasting to a stop. Not the raspy sound I heard on the video at all. Varitune muffles are SS and very well built. Mechanic told me the hangers were unequal lengths and he had to bend so one side didn't hang low. As far as quality they are worth the over $550 I paid for them, as far as sound, I think the Varitune is a gimmick more than a good sounding muffler. Also the drone is pretty bad at 2000 rpm. Will replace them as soon as I can afford it. Also tips are single wall chrome pipe NOT what I would expect for the money I paid. Hopefully BBK will put these on a stock 2014 hear them and realize their mistake. All in all I give them a 10 on build quality and a 2 on sound. That is just my opinion. Thank you BBK for being an American company and allowing me to voice my opinion.

    Terry5357

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 5+ Dallas, Texas

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    December 02, 2014

    Wow, I am amazed

    Ladies and Gents, the sound clips and video don't do this exhaust justice. I was a bit concerned with the low number of reviews and very little info online about the BBK Varitune. I had the shop install it with the valve open and the car sounds beastly! I love the deep throaty roar and the tone of an old school muscle car. I have no other mods so I can safely say the sound coming out of my car is 100% due to this exhaust. With the valve open to the fullest at low rpms you can really hear it inside the car but it isn't annoying in any way because the sound is deep and beautiful. I wish the exhaust was slightly cheaper at 499 I highly considered others with far more reviews, but I took a chance and it payed off. I really liked the idea of having the valve and being able to control the noise factor. Some day I may want to tone it down a bit, but until then, open all the way and full speed ahead!

    rickdelprado

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Miami, FL, USA

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    January 28, 2014

    2014 Mustang Gt

    The BBK exhaust sounds great on my wife's 5.0. She wanted her stock mustang to be a little louder, but nothing obnoxious. I on the other hand wanted to steal her car on the weekend and take it to the track occasionally. So the Varitune works great for us. We leave it closed for her on the week days and on the weekend I can open it up in a couple minutes. Installation wasn't the easiest I have ever done on an axle back, but I did it by myself in my drive way in about 2 hours. I would recommend this product. I have had about 10 cutouts on previous vehicles and they always gave me problems. This on the other hand is simple and works great.

    duramax22

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Houston, TX, USA

    Helpful (1) (1)

  • 4/5 Yes, I recommend this product

    October 26, 2013

    Worth the work if you're in for the long haul

    The first thing I want to say is that I couldn't be happier with the end result of these BBK Varitune mufflers for my '13 5.0 California Special. However, it was the absolute pain in the butt and frustration that came with installing it almost made me pack everything up and ship it back. I have installed many aftermarket mufflers, to include Flowmasters on my '90 5.0, both Magnaflows and Ford Racing FR500's on my '07 GT, and now these BBK's. No set of mufflers ever took me more than 45 minutes to install. These BBK's took almost 3 hrs. Mostly as a result of the fact that the instructions were poor and the pipes required widening in order to fit and overlap. I read the instructions several times before attempting to install. I would like to also mention that there were two of us working on this project together and we had a hydraulic lift to assist. Our frustration almost had us to the point of packing it up and sending it back. Lesson learned, you will most certainly have to remove the braces that hold the rubber grommets in order to remove the mufflers. Let me finish on a good note...once all was FINALLY installed, nothing could compare to the sweet music that poured out when I turned my 5.0 on. I have only had the mufflers in the full open position so far, and they sound amazing.

    Jim78

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Sierra Vista, AZ, USA

    Helpful (0) (1)

  • 5/5 Yes, I recommend this product

    June 23, 2014

    Varitune

    Bought this system just because I was able to adjust the loudness. Had it installed by my local mechanic. Best thing I've ever done. Seems everything was off by a little - plus it would help to have an extra pair of hands. Once they were on I couldn't be happier. Nice deep rumble but not overbearing. The big nut on the adjustment screw is 15/16 and it seems that a 12 m.m. wrench works best for the end of the adjustment screw. I would recommend this product.

    Koppe06

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4 Michigan, USA

    Helpful (0) (0)

  • 4/5 Yes, I recommend this product

    March 22, 2014

    Great sound on stock pipes

    The installation was not that hard even on the floor with two jack stands. Pipes took a little "fine tuning" to fit together but over all not the hardest part I've installed. Sound is great even on stock pipes, it's mellow closed and open still sounds great with some rough edges. Great product !

    Fyrman00

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Central Fl

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    November 01, 2013

    Extremely Satisfied with the BBK varitune axle-back exhuast

    Installation was a bit difficult and took longer than anticipated, but nonetheless fit and works. The sound is great it has a very mean sound, and is not overly obnoxious. It is perfect in my opinion. The BBK Varitune Exhaust is definitely worth the price! It brings a smile to my face every time I start my 5.0 GT/CS, and of coarse every time I open the throttle!

    ericd156

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Bakersfield, CA, USA

    Helpful (0) (0)

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