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Magnaflow Street Series Cat-Back Exhaust (18-20 GT w/ Active Exhaust)

Item 402468
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Market Price $1,916.99 You Save 12% ($220.77)
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$1,696.22 (pair)

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Ship to: Ashburn - 20149
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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Specs & Installation


      • Requires MF Active Valve Kit Part# 10805 for Factory Active Exhaust Functions
      • Aggressive Muscle Car Tone
      • Enhanced Exhaust Flow for Increased Torque and Horsepower
      • Provides a Drone Free Driving Experience
      • Efficient Straight-Through Free-Flowing Street Mufflers
      • Connects to Stock Catalytic Converters
      • Sturdy 3 Inch Stainless Steel Tubing
      • Comes with 4.50 Inch Polished Tips
      • Easy and Direct Bolt-On Design
      • Limited Lifetime Warranty
      • Made in the USA
      • Fits 2018-2020 Ford Mustang GT Model


      Superior Exhaust Upgrade. The Magnaflow Street Cat-Back Exhaust is designed to deliver a discernible bump in performance and aggression for your Active Exhaust equipped 5.0L Mustang without having to tinker a lot with the assembly. This exhaust delivers improved exhaust flow, in comparison to the factory exhaust, resulting in improved torque and rear horsepower with a deep growl sound that adds an aggressive appeal.

      Greater Power and Performance. Backed by a highly-efficient pipe and a straight through, free-flowing muffler design, the Magnaflow Street Cat-Back Exhaust facilitates efficient airflow compared to stock. It delivers improved performance, and a unique tone on the street and drag strip.

      High Strength Stainless Construction. The Magnaflow Street Cat-Back Exhaust is built from highly durable and strong 3-inch mandrel bent stainless steel T 304 for elongated usable life. It delivers a clear and smooth, yet throaty sound. You will be excited to note that the design utilizes high-quality twin tips which gives good resonance. The tips are completed in a classy polished finish that highlights its appeal and protects the exhaust from wear and corrosion.

      Installation. This Magnaflow Street Cat-Back Exhaust allows for an easy direct bolt-on installation in just under 4 hours. No custom modifications are required for the installation, meaning it should be easy and direct.

      Warranty. Magnaflow provides a limited lifetime warranty against material and workmanship flaws.

      Application. The Magnaflow Street Cat-Back Exhaust is compatible with the 2018-2020 Ford Mustang GT models that is equipped with Active Exhaust.

      Please Note. In order for this Magnaflow Exhaust System to function properly on Mustangs equipped with the Factory Active Exhaust Function, you will need to purchase Magnaflow's Active Valve Kit, part# 10805 (sold separately).

      Fitment: 2018 2019 2020 Details

      MPN# 19370

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (4)

      Write a Review

      Ratings Summary

      4.5 out of 5 overall rating from 4 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • November 16, 2019

        5 2019 GT - Derder Installation Time: Shop Install Installation Cost: $100-$250

        Just what I wanted

        Not overly loud or obnoxious, which is just what I wanted, a deeper growl but not annoying or bothersome to others around me, at least in my opinion. Contrary to how these were listed, they already had the active exhaust kit installed, still not sure if that was a screw up from the manufacture or what, but I was able to return the kit I bought so no harm done.

        Helpful (0)
      • April 28, 2019

        4 2018 GT - Sean Installation Time: Less than 1 Hour

        Expensive and Drone

        First of all, the fit and finish of this cat back exhaust is amazing. The exhaust sounds really deep in low RPMs which I love. However, this exhaust is not as loud as other "competition" exhausts from Corsa, Roush and Borla. This also have a noticeable drone on the highway at 2k RPM 60MPH. Therefore, I changed my exhaust to Roush axle back with H pipe for only $800 in total, half of what this costs, to get a much louder and deeper sound out of my exhaust with NO drone at all. If you don't want any drone, look somewhere else.

        Helpful (0)
      • October 12, 2018

        5 2018 GT - AnnP Installation Time: Afternoon

        I like it

        Fits well and sounds great. Took a few attempts to get it installed with the tips even

        Helpful (8)
      • April 02, 2018

        4 2018 GT - LawrenceP Installation Time: Less than 1 Hour

        New Exhaust

        Not quite as loud as I wanted but sounds great. Nothing obnoxious sounding just a simple rumble with a little throaty idle and cruising sound under small acceleration.

        Helpful (10)

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Muffler Assembly
      • (2) Polished Tips
      • Installation Hardware
      • Detailed Instructions

      Will It Fit My Mustang

      • Bullitt - 19, 20
      • GT - 18, 19, 20

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