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Magnaflow MF Series Dual Exhaust System - Middle Side Exit (14-18 5.3L Sierra 1500)

Market Price $1,075.87 You Save 12% ($123.77)
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$952.10 (each)

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  • Item S502376

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    Features & Details

    • Middle Side Exit Exhaust Tips
    • Smooth, Throaty Sound
    • Mirror Polished Finish
    • Bolt On Installation
    • T407 Mandrel-Bent Stainless Steel
    • Unfettered Flow System
    • Fits 5.3L 2014-2018 GMC Sierras
    Pitch Perfect. With the mandrel-bent stainless steel piping and a free-flowing muffler design, this signature Magnaflow MF Series Cat-Back Exhaust - Middle Side Exit is a perfect upgrade to your GMC Sierra. The exhaust system delivers the perfect balance between a smooth baritone sound and fierce growl.

    Performance Meets Construction. Stock exhaust systems are restrictive and known to minimize performance. The Magnaflow MF Series Cat-Back Exhaust - Middle Side Exit improves every area of your exhaust system, giving you unfettered exhaust flow, increased horsepower and torque, and better fuel efficiency.

    Resilient Construction. This MagnaFlow Exhaust System is constructed of 409-stainless steel, famous for high thermal stability that withstands bending or deformation as temperatures rise. Every curve and bend is mandrel-bent to ensure the interior surface remains smooth and uninterrupted, continually delivering massive exhaust flow while keeping corrosion at bay.

    Easy Bolt-On Installation. Designed to fit with your Sierra factory housing, the upgrade ships with a manual, instructions and installation hardware.

    Warranty. The exhaust has a lifetime warranty for original buyers.

    Application. Magnaflow MF Series Cat-Back Exhaust – Middle Side Exit fits all 5.3L 2014-2018 GMC Sierras.

    Fitment: 2014 2015 2016 2017 2018 Details

    MPN# 15270

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) MagnaFlow MF Series Cat-Back System
    • Installation Hardware and Necessary Parts
    • Mounting Manual
    Installation Info
    Tech Specs
    Will it fit my Sierra 1500?

      Customer Photos

        Questions & Answers (3)

        3 Top Rated Questions

        thinking about this setup for my truck...question however, will running boards be in the way? Meaning, will running boards impact the look of the exhaust system?

        • This exhaust setup should not interfere with the running boards on your truck.

        Helpful (1)

        Is this available with black tips?

        • We do not currently offer an option with black tips at this time.

        Helpful (0)

        I have a 2018 High Country with running boards that automatically go in and out when you open and shut the doors. Will that be a problem with this exhaust?

        Post Your Question

          Customer Reviews (2) Write a Review

          Overall Rating 3

          out of 5 stars

          Installation Time:Less than 1 Hour

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

          • 5/5

            Installation Time: Less than 1 Hour

            April 23, 2019

            Review from Magnaflow MF Series Dual Exhaust System - Middle Side Exit (14-18 5.3L Silverado 1500)

            Awesome exhaust for the 5.3

            This has one of the cleanest sounding and deepest exhaust notes for the 5.3 engine. I researched for a few months listening to hundreds of sound clips and while there are other great sounding exhaust i always came back to this as my standard..."but was it better than the magnaflow?" Now, anyone that has looked up anything involving exhaust knows of the v 4 drone issues cant avoid reading something on it so it should not come as a surprise. If you don't plan on getting the tuner (400 ish but def worth it) or other device that is just for cutting out AFM (200 ish) off then you may want to consider something a little more subtle so its not as noticeable to you. This is the deepest tone you can get while being moderately loud so expect it to be noticeable when you hit v 4 mode simple as that. Lots of good clips all over you tube of cab sounds, drone etc so. I have had flow-masters and magnaflow as well as a few others in the past and i always got more compliments on the magnaflows, they just sound so dang good!


            Year: 2017 Submodel: LT Engine: 5.3L V8

            Helpful (0)

          • 1/5

            March 31, 2019

            Review from Magnaflow MF Series Dual Exhaust System - Middle Side Exit (14-18 5.3L Silverado 1500)

            Bad choice

            This exhaust is VERY LOUD. Deep and mellow, but LOUD. It sounds fine when accelerating in v8 mode but when the truck switches into v4 mode the exhaust note sounds like a constant loud subwoofer note that vibrates everything inside the cab. I can hear bolts rattling under the dash. This will force me to purchase an expensive tuner to turn v4 mode off. Not recommended.


            Year: 2015 Engine: 5.3L V8

            Helpful (3)

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