2015-17 Mustang BBK Varitune Axle Back Exhaust Kit GT by BBK

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bbk 41115 2
  • bbk 41115 2
  • varitune muffler

Easily adjust the sound and horsepower your 2015-2017 Mustang GT makes with BBK's varitune Axle Back exhaust kit!

Item #BBK-41115
MPN# 41115

Everyday Low Price: $569.99

In Stock Ships tomorrow!

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  • Adjustable Sound
  • Increased Performance
  • Made In The USA
  • Easy Install


  • 4" Brushed Stainless Tips
  • 304 Stainless Steel
  • 8-10 Decibel Sound Adjustment
  • 10-15 Horsepower Increase

What's in the Box

  • (1) Varitune Axle Back Kit

Made in the USA

Product Description

BBK Varitune Axle Back Exhaust
Give your S550 adjustable sound and power with BBK's all new 2015-2017 Mustang GT Varitune Axle Back exhaust kit! BBK's patented design features an adjustable exhaust chamber that allows you to adjust sound and power with a few turns of the wrench. The valve opens and closes to the point you desire and then is locked in place with the jam nut. The full range of adjustment provides an 8 to 10 decibel sound increase while dyno testing has shown a consistent 10-15 horsepower increase over stock.

BBK Quality
The 2015-2017 Mustang GT Varitune Axle Back exhaust is constructed from 304 series stainless steel that will hold up to the harsh elements. Mandrel bent tubing provides fitment and flow that can't be beat. The adjustable chamber is reached at the back of the muffler for easy accessibility and adjustment. 4" brushed stainless steel tips finish this kit off for a look that can't be beat. BBK constructs and manufactures this exhaust in the USA for the ultimate quality.

Installation Note
The factory midpipe requires cutting for installation.

Fitment Note
Will NOT fit convertible due to extra bracing.

-Fits 2015-2017 Mustang GT Coupe

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Product Reviews (1)

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1 of 1 REVIEWS
1 of 1 REVIEWS

5 Stars   Well made axle back
By on 7/19/2016
After installing a Ford X pipe and running the stock mufflers, something seem to missing sound wise. So I was going to pick up Ford touring mufflers by Borla but
was choking on the price. There's a lot of choices out there that are just as nice
and have the sound and quality I was looking for. This is a first with BBK products
for me. I have been watching YouTube's on axel back systems and was impress
with this system. The sound at closed position is Great all the way through the gears. I haven't open up the cut off on the system yet but will play with it more as time allows. Yea it's not a solenoid type system, but neither is the price! I am very
pleased with BBK's quality and design. Some of the other systems are a bit over the top sound wise for me, after a while too loud is truly to loud. With this muffler you get the best of both worlds. Sound can be a very subjective thing when looking for a system. Don't let the price fool you, This is a very well made system.
I had my local shop do the install, Thanks to UPS. but the install took less than an 1.5 hours.

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 2015 (15) - 2016 (16) - 2017 (17)

About This Brand

BBK - Today's Performance
Since 1988 - BBK has dedicated itself to designing and building cutting-edge high-performance parts and accessories for today's EFI-equipped Mustangs and Ford Lightnings while maintaining the OEM quality levels.

From their world-famous line of "Power-Plus-Series" performance throttle bodies to their hundreds of "CNC-Series" performance exhaust offerings - the BBK brand is known for delivering unmatched value and quality. Shop BBK for your Mustang headers, exhaust, cold air intakes, and other performance parts!

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