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AFE Street Series Twisted Steel Down-Pipe - Catted (15-20 EcoBoost)

Item 398789
AmericanMuscle no longer carries the AFE Street Series Twisted Steel Down-Pipe - Catted (15-20 EcoBoost). Please check out 2015-2020 Mustang Downpipes for an updated selection.
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Features & Details

  • Improves Exhaust Flow and Increases Power
  • Gives a Racy Growl Tone to Exhaust Note
  • More-Efficient, Straighter Path
  • Includes 400 CPSI Catalytic Converter
  • T304 Stainless Steel Mandrel Bent Tubing
  • Brushed Finish
  • NOT CARB-Certified
  • Fits Perfectly with 3" aFe Performance Cat-Back
  • Simple Installation
  • Fits 2015-2020 Ford Mustang EcoBoost

Let it Ride. This AFE Street Series Twisted Steel Down-Pipe will open up the performance of your EcoBoost Mustang. It frees the flow of exhaust early in the path. This is a critical area that a simple cat-back can't address. This pipe will not only improve power while retaining a catalytic converter for street-legal performance, but will help your EcoBoost deliver a throaty, race-car like growl. It's part of a total performance upgrade that will take your EcoBoost 'Stang to a whole other level.

That Sound. The straightened curves and generous 3" diameter of this pipe gives it great sound potential. You'll hear music every time you get into that throttle.

Keep the Cat. Thanks to a high-performance 400 CSPI (cells per square inch) catalytic converter, you can have your cat and eat it too. Whoops! Did we say "cat?" We meant cake. This downpipe delivers maximum performance while keeping things clean.

Stainless Steel Construction. This down-tube is crafted of aerospace-grade T304 stainless that will never rust, yellow, or fade. It's all TIG-welded by hand for a precision fit. Extra bungs are included for an auxiliary 02 sensor or more instrumentation. The curves are all mandrel-bent for max smoothness. A brushed finish gives a great, natural look.

Application. This AFE Street Series Twisted Steel Down-Pipe fits your 2015-2020 Ford Mustang with the EcoBoost turbo 4-cylinder.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Front Down-Pipe with Cat
  • (1) Adaptor for 2.25" Stock Exhaust
  • (1) Adaptor for 3" Aftermarket Exhaust
  • (1) Hardware Kit
Installation Info
Will it fit my Mustang?

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        Customer Reviews (1) Write a Review

        Overall Rating 5

        out of 5 stars

        Installation Time:Afternoon

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

        • 5/5

          Installation Time: Afternoon

          April 12, 2018

          AFE Street Series Twisted Steel Down-Pipe - Catted

          I installed this on my 2015 EB. Quality of the materials is top of the line. There are less expensive options, but this is a quality product. Fit was perfect. Sound was increased of course do to the added flow provided by the pipe. I also added at the same time a magnaflow cat back exhaust, so I cannot say which mod provided the desired sound that the combined mods made. I didn't want a extremely loud exhaust, just something louder than stock. Just takes a couple hours to install using jack stands on my garage floor.


          Year: 2015 Submodel: EcoBoost

          Helpful (2)

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