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

Market Price $2,232.13 You Save 17% ($372.02)
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$1,860.11 (kit)

+ $99.00 Handling Fee with FREE Shipping

  • Item 390224

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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

    MPN# M-5230-M8SBV

    CA Residents: WARNING: Cancer and Reproductive Harm -

    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?

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    Questions & Answers (10)

    5 Top Rated Questions

    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 (2)

    Can you use different exhaust tips?

    • This exhaust will only work with the exhaust tips provided in this kit.

    Helpful (0)

    Can you please tell me what decibel the axle back hits around 3k rpm please?? So close to buying but want to know how close to 95 it gets. Don't need proof I'll take your word for it

    Will this fit on 2017 GT convertible?

    • It is designed to fit both fastback and convertible 2015-2017 GT Mustangs equipped with the factory Premium Chassis Package (Trim Levels: 400A/401A).

    Helpful (0)

    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.

    Helpful (0)
    Post Your Question
    5 More Questions
    I got Magnaflow compaction cat back installed. Will Borla exhaust fit ?. As I understand Magnaflow compaction cat back is 3". 1 answer
    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 1 answer
    Would I be able to switch to these axle backs coming from a roush axle back without having to cut or miss any piping? 1 answer
    are these the ONLY quad tips that will fit the GT350 valance if so is there a sound clip of the exhaust available somewhere? 1 answer
    Can this be used with an H pipe instead of the x pipe? If so is there one that will fit this axle-back? 1 answer

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    Customer Reviews (3) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$250-$500

    • Loudness / Volume 4.333333 4.3
    • Exhaust Note 4.666667 4.7
    • Fit & Finish 5 5
    • Bang For Your Buck 5 5

    • 5/5

      Installation Time: Afternoon

      October 23, 2018


      This exhaust kit teamed with the power pack 3 makes the s550 coyote stir the soul as it screams to its new 7500rpm redline.


      Year: 2017 Submodel: GT

      Helpful (6)

    • 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 (8)

    • 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 (9)

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