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Ford Performance by Borla Sport Axle-Back Exhaust w/ GT350 Lower Valance (15-17 GT Premium)

Market Price $2,087.99 You Save 14% ($288.00)
Our Price

$1,799.99 (kit)

+ $99.00 Handling Fee with FREE Shipping
  • Item 390224
  • MPN# M-5230-M8SBV

In Stock Ships same business day.
Ship to: ASHBURN - 20146
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    Features & Details

    • Loud Throaty Exhaust Note without the Drone
    • Manufactured by Borla for Ford Racing
    • Straight-Through Sport Mufflers
    • T-304 Stainless Steel Construction
    • 2.5" Mandrel-Bent Tubing
    • Includes GT350 Rear Lower Valance with Quad Exhaust Tips
    • Cut and Clamp Design
    • 49-State Drive-By Noise Legal
    • Fits 2015-2017 GT Mustangs with Premium Package Rear Bumper
    Loud Throaty Exhaust Note. The 2015-2017 GT Mustang's mild factory exhaust note is fine if your living in a retirement community, but not for those who want to be heard long before they arrive on the scene. This Ford Racing Sport Axle-Back features a pair of straight-through sport mufflers that have been acoustically engineered to add a loud, aggressive, throaty exhaust note to your 5.0L V8 Mustang that will definitely get you noticed.

    More Horse Power and Torque. A Ford Racing Sport Axle-Back Exhaust will not only improve the sound of your Coyote powered Mustang's exhaust, but it will also improve its power and performance as well. By reducing back pressure and increasing exhaust flow, you will see a noticeable improvement in rear wheel horse power and torque.

    Shelby GT350 Styling. The GT Mustang is already one of the best looking cars on the road today, how could it look any better? By installing a Shelby GT350 Rear Valance. This Ford Racing Axle-Back Kit includes the same exact Rear Lower Valance with integrated Quad Exhaust Tips that comes as standard equipment on the Shelby GT350. Installation of the rear valance will require removal and trimming of the rear premium bumper cover.

    High Quality Borla Construction. Sport Axle-Back Exhaust Systems are manufactured by Borla for Ford Racing to strict specifications. Borla uses mandrel-bent 2.5" diameter, aircraft grade, T-304 stainless steel tubing for excellent exhaust flow and enduring corrosion resistance. The system includes two high flow, straight-through Sport mufflers that feature a perforated core and just the right amount of packing filament.

    Cut & Clamp Installation. The installation of this Ford Racing Axle-Back Exhaust System will require cutting and removing the factory muffler assemblies and clamping the new muffler assemblies in place. Clamps and installation instructions are provided.

    Application. This Ford Racing by Borla Sport Axle-Back Exhaust with Shelby GT350 Rear Lower Valance is designed to fit both fastback and convertible 2015-2017 GT Mustangs equipped with the factory Premium Chassis Package (Trim Levels: 400A/401A) for both great looks and great sound.

    Fitment: 2015 2016 2017 Details

    What's in the Box
    • (1) GT350 Rear Lower Valance with Quad Exhaust Tips
    • (1) Passenger Side Muffler Assembly
    • (1) Driver Side Muffler Assembly
    • (2) Clamps
    Installation Info
    Tech Specs
    Axle-Back Exhaust Specifications
    Piping Material: Stainless Steel Tip Material : Chromed Stainless Steel
    Piping Size: 2.5" Tip Size: Dual 4.0"
    Muffler Type: Straight-Through Fitment: 2015-2017 GT
    Will it fit my Mustang?
    • GT - 15, 16, 17

    Compatible with Mustangs equipped with a Premium Package Rear Bumper Cover

    Most Helpful Reviews


    The look alone is worth it just awesome and of course the sound of the axle back just brings the car to life ...

    Helpful (1)

    Gt 350

    Just install my gt 350 axle back exhaust with a ford racing x pipe. And I love it got the aggressive sound.

    Helpful (1)

    Overall Rating 5 out of 5 stars
    Read All 2 Reviews

    Customer Photos (3) Submit Your Photo

    View All 3 Photos

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    8 Questions / 5 Answers

    Ask a Question

    Hi, my car currently has Ford Performance by Borla Sport Cat-Back Exhaust installed. Link( ). However it's a dual tip exhaust and I wanted to switch it to quad tip exhaust. Is it going to work if I buy this kit and remove the current mufflers and replace it with this kit?


    • Yes, you can replace the axle back portion of your Ford Performance by Borla Sport Cat Back with the Ford Performance by Borla Sport Axle-Back Exhaust w/ GT350 Lower Valance.


    Helpful (1)

    I live in California and I'm tired if getting pulled over with my current set up! This product is 49 state legal does anyone know if this product is legal in california


    • Any exhaust listing that it is 49 State legal is implying that this is not California legal, as this is where the restrictions are the tightest.

      Rob D

    Helpful (0)

    Hello, I had installed the Roush Rear Valance Quad Tip Textured Black For Premium Models With Rear Park Assist Sensors last year. Will there be an issue swapping that out for this? I also have magnaflow axle back with 3.5 tips. Will they fit? Would I have to replace them? Lastly, will this affect the park assist sensors. Thanks in advance.


    I got Magnaflow compaction cat back installed. Will Borla exhaust fit ?. As I understand Magnaflow compaction cat back is 3".


    • Hello! The Ford Performance by Borla Sport Axle-Back Exhaust is designed to mount up directly with the stock exhaust. You will likely need to do some modification to get it to mount with the Magnaflow Catback.


    Helpful (0)

    Hello, currently on my mustang I installed a Roush axle back will this axle back fit with the cut I made for the Roush muffler


    • Since there is a custom modification to your valance, we would not be able to know if it would fit perfectly.


    Helpful (0)

    Would I be able to switch to these axle backs coming from a roush axle back without having to cut or miss any piping?


    • If you are switching to this exhaust system with the rear lower valance, you will need to modify your rear end. As far as the piping, these will clamp into the place that the Roush axle-backs were taken out of.


    Helpful (0)

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    Customer Reviews (2) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$250-$500

    • Loudness / Volume 4.5 4.5
    • Exhaust Note 4.5 4.5
    • Fit & Finish 5 5
    • Bang For Your Buck 5 5

    • 5/5

      Installation Time: Afternoon

      April 24, 2017


      The look alone is worth it just awesome and of course the sound of the axle back just brings the car to life ...


      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      September 17, 2016

      Gt 350

      Just install my gt 350 axle back exhaust with a ford racing x pipe. And I love it got the aggressive sound.


      Year: 2015 Submodel: GT

      Helpful (1)

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