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Magnaflow Competition Cat-Back Exhaust w/ Polished Quad Tips (15-19 GT350)

Market Price $1,960.87 You Save 12% ($225.59)
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  • Item 390659

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    Features & Details

    • Truly Aggressive Muscle Car Sound
    • Improves Exhaust Flow for More Power and Sound
    • Compatible with Factory Multi-mode Exhaust
    • Straight-Through Competition Mufflers
    • Free Flowing X-Pipe Included
    • Durable 409 Stainless Steel Construction
    • 3" Mandrel-Bent Tubing - Steps Up From 2.5"
    • Mirror Polished, Dual 4" Stainless Steel Tips
    • Direct Bolt-on Replacement
    • Fits 2015-2019 Shelby GT350 Mustangs
    Aggressive Muscle Car Sound. If the Shelby GT350 and GT350R Mustangs with their driver selectable multi-mode exhausts weren't loud even for you already, you can now wake your neighbors and the dead by installing a Magnaflow Competition Cat-Back Exhaust System. This Magnaflow Competition Cat-Back features a pair of straight through mufflers and a free flowing x-pipe to uncork all the aggressive sound that the GT350's flat-plane-crank 5.2-liter Voodoo engine has to offer.

    More Power and Better Performance. A Magnaflow Competition Cat-Back Exhaust not only improves the sound of your Shelby GT350's exhaust, but also improves its power and performance as well. By reducing back pressure and improving exhaust flow, you will see impressive gains in rear wheel horse power and torque.

    Compatible with Factory Multi-mode Exhaust. One of the cool features of the Shelby GT350 is the multi-mode exhaust that allows the driver to select between normal and sport modes. Knowing that this was one feature that GT350 owners could not do without, Magnaflow manufactures their mufflers with the same butterfly valves as Ford. When closed the valve blocks the exhaust flow, forcing it out one tip of the muffler to produce a more street friendly sound. When opened the valve "uncorks" the exhaust flow allowing it to exit through both tips of the muffler to produce an aggressive, throaty race style exhaust note. This Magnaflow Cat-Back reuses the factory valve motors.

    Magnaflow Quality. Magnaflow manufactures their Cat-Back Exhaust systems right here in the USA with pride. Magnaflow Competition Cat-Back's are mandrel-bent from 3" diameter, premium grade, 409 stainless steel tubing for outstanding exhaust flow and enduring corrosion resistance. This system includes an X-Pipe and two high flow, straight-through Competition mufflers. The mufflers feature a pair of mirror polished dual 4" tips that replace the faux factory tips located in the rear valance.

    Direct Bolt-on Upgrade. Magnaflow's Competition Cat-Back Exhaust with X-Pipe bolts straight up in the stock location with no cutting or extra modifications required. Installation of this Magnaflow Cat-Back can be completed in about two hours with just basic hand tools.

    Application. This Magnaflow Competition Cat-Back Exhaust with X-Pipe is designed to fit the 2015-2019 Shelby GT350 and GT350R Mustangs equipped with the Voodoo 5.2L V8 engine. Will not fit GT models.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# 19283

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Right Muffler Assembly
    • (1) Left Muffler Assembly
    • (1) Right Over Axle Intermediate Pipe
    • (1) Left Over Axle Intermediate Pipe
    • (1) X Pipe Assembly
    • (4) Clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: 409 Stainless Steel Tip Material : Polished 409 Stainless Steel
    Piping Size: 3" Tip Size: Dual 4"
    Muffler Type: Straight-through Fitment: 2015-2017 GT350, GT350R
    Will it fit my Mustang?

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    Questions & Answers (3)

    3 Top Rated Questions

    Is that muffler work like oem muffler ? what i mean is the valve close and open on borla muffler ?

    • This does function as/is compatible with the factory Multi-mode Exhaust.

    Helpful (0)

    Will it not fit the mustang 5.0 because of the valence or pipe sizes? I have a gt350 rear valence and need the exhaust that will fit it.

    • Unfortunately, the Magnaflow Competition Cat-Back Exhaust are only designed for the 15-17 GT350 and GT350R. The Exhaust system between the GT and the GT350 are slightly different, which prevents this from being a direct bolt on.

    Helpful (0)

    Will it not fit the mustang by because of the valence or pipe sizes? I have a gt350 read valence and need the exhaust that will fit it.

    • That is indeed the main fitment issue. You would be able to get this to fit with little to no modification with your GT350 valance.

    Helpful (0)
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    Customer Reviews (2) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Afternoon

    • Loudness / Volume 3 3
    • Exhaust Note 5 5
    • Fit & Finish 5 5
    • Bang For Your Buck 4 4

    • 5/5

      Installation Time: Afternoon

      June 03, 2018

      Deep sound

      Hi install the magnaflow to my 2017 GT350 the sound is very deep deep like a monster hidden in the car but is not loud compared to the stock muffler if you looking for a classic muscle car sound this is for you if you looking for racing and loud sound go for the borla attack the install took me hr 1 1/2


      Year: 2017 Submodel: GT350

      Helpful (9)

    • 5/5

      August 04, 2016

      Amazing manga flow exhaust!

      I love my 2015 mustang, but it always could've used some more noise from the exhaust, along came this bad boy, not only does my mustang sound amazing now but it adds some styling to the GT350/GT350R. Totally worth it, installation took about 2 hours.


      Year: 2015 Submodel: GT

      Helpful (8)

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