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Magnaflow Competition Series Cat-Back Exhaust with Polished Tips (11-12 Mustang GT, GT500)

Item 48038
AmericanMuscle no longer carries the Magnaflow Competition Series Cat-Back Exhaust with Polished Tips (11-12 Mustang GT, GT500). Please check out Magnaflow Competition Series Cat-Back Exhaust with Polished Tips (11-12 Mustang GT, GT500) for an updated selection.
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    Video Review & Installation

    Hey, Justin here with, taking a closer look at Magnaflow’s competition series catback exhaust fitting all 2011 and newer Mustang GTs. The competition series continues to be a popular choice here on the site, thanks in part to it’s very aggressive tone, along with the solid performance gains this kit offers. The system is constructed from 100% stainless steel and features 3” mandrel bent tubing which is going to be the norm for the majority of aftermarket catbacks for the 2011 and up Mustangs. That aggressive tone comes from these competition series mufflers, which feature a straight through design, really freeing up that exhaust flow. Finally, everything exits out these hand polished 4” tips. As far as price is concerned, you’ll find the competition series to be in the mid to high side of the price range, but still not as expensive as some other exhausts on the market. Getting this catback installed is fairly straightforward, and should take you about 2 hours using standard hand tools. Now let’s hear how Magnaflow’s competition series sounds compared to our factory exhaust.

    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation


    • Aggressive Musclecar Sound
    • 3" Mandrel-Bent Tubing
    • Stainless Steel Construction
    • 4" Polished Tips
    • Fits 2011-2012 GT or GT500 Mustangs


    See our 2011 GT Project Car Now

    Add Horsepower. Stop choking your 5.0 with a stock exhaust and enjoy more horsepower with a Magnaflow Competition Cat-Back. By reducing backpressure and giving your Mustang GT or GT500 a free-flowing exhaust, you'll see great power and torque gains. In fact, our 2011 Project car has this same system with the off-road x-pipe, and was dyno tested with a peak gain of 19 RWHP and 18 ft-lb of torque. Plus, you'll set the stage for future mods.

    Aggressive Musclecar Sound. Give your 2011-2012 Mustang GT a deep, aggressive rumble that will make lesser cars clear a path at lights with a Magnaflow Competition Cat-Back. This premium quality exhaust features free-flowing, straight-through mufflers that increase power and give your GT or GT500 an unmistakable musclecar sound.

    Magnaflow Quality. Each piece is made from 3" mandrel bent stainless steel tubing for long life and a perfect fit. The straight-through mufflers end with brightly polished 4" stainless tips that exit in the stock locations for impressive styling.

    Application. Made to be a direct bolt on, this catback will bolt straight up to the factory Mid-Pipe without any extra modifications required on your 2011 or 2012 Mustang GT or GT500 to give it the deepest, most aggressive sound possible.

    Note: Coupon codes cannot be applied to this product.

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (2) Muffler assemblies/li>
    • (2) Over axle pipes
    • (4) Clamps

    Tech Specs

    Cat-Back Exhaust Specifications
    Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
    Piping Size: 3" Tip Size: 4"
    Muffler Type: Straight-through Fitment: 2011-2012 GT or GT500 Mustangs

    Customer Reviews (500+)

      Questions & Answers

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