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Dynatech SuperMAXX 3-Inch to 2.50-Inch Catted X-Pipe (05-10 GT w/ Long Tube Headers)

Item 394256
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      Product Information

      Features, Description, Reviews, Specs & Installation


      • High-Flow Catted X-Pipe
      • Improves Exhaust Flow and Sound
      • High-Flow Metallic Substrate Catalytic Convertors
      • Mandrel-Bent Stainless Steel Construction
      • 3" (Header) to 2-1/2" (Cat-Back)
      • Intended for use with Dynatech Longtube Headers
      • Fits 2005-2010 4.6L V8 GT Models


      Improved Tone and Performance. Give your 2005-2010 GT Mustang a deep tone and improved performance by upgrading to a Dynatech SuperMAXX Catted X-Pipe and a set of longtube headers that are street legal. This Catted X-Pipe is ideal for daily drivers that hit the track or the drag strip on the weekend.

      Durable Stainless Steel. Manufactured with high-grade stainless steel, this Dynatech SuperMAXX Catted X-Pipe is built to last for years to come. The Cats and pipe are durable and rust resistant to withstand the elements and temperatures up to 1500 degrees. The Dynatech SuperMAXX Catted X-Pipe is backed with a limited lifetime warranty.

      Bolt-on Installation Process. This Dynatech SuperMAXX Catted X-Pipe bolts-up to the three-inch longtube headers and fits the existing 2-1/2-inch factory exhaust system. All of the hardware needed and an installation manual is included.

      Application. This Dynatech SuperMAXX Catted X-Pipe is designed for use on 2005-2010 GT Mustangs equipped with Dynatech Longtube Headers and a 2.5-inch cat-back exhaust.

      Fitment: 2005 2006 2007 2008 2009 2010 Details

      Dynatech 722-54320

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (2)

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      Ratings Summary

      5.0 out of 5 overall rating from 2 customers

      • April 26, 2018

        5 2006 GT - 3VIL

        Recommended with cats for N/A cars

        First of all, I love the 4-bolt design of these so they're secure. I will say that your car may gripe about the smaller cats, but that seems a grab bag among the many versions of ECM in the 05-10 Mustangs. Some complain, some don't...though I just keep them turned off and plug with an 18mm short bolt/washer/copper sealant. With cats keeps the ridiculous rasp/drone out of the exhaust that an off-road will typically have and provides some needed backpressure (by experience, trust me) on the N/A cars, though the F/I and heavily modified people may not need this. They bolts/nuts will corrode over time so take your time and adjust it all right the first time or you'll be making replacements, though Dynatech (AFCO) will gladly help get you replacements or talk to the good folks here at AM (I originally went through AFCO before AM got a list on these). Having the LTs with these cats will net you little bang-for-the-buck on a N/A car but will get some and better define/deepen your exhaust note per my experience...even on a stock muffler. Just my $0.02.

        Helpful (9)
      • February 16, 2017

        5 2010 GT - OmarH


        Loud but not overwhelming great for a person wanting that muscle car sound without being annoying

        Helpful (11)

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • Catted X-Pipe

      Tech Specs

      Mid Pipe Specifications
      Style Mid Pipe: Shorty "X"Type Headers Required:Long Tube Headers
      Piping Material:Stainless SteelPiping Size:3" to 2.5"
      Catalytic Converter:"Yes" - Intended For off-road useFitment:2005-2010 GT

      Will It Fit My Mustang

      • Bullitt - 08, 09
      • GT - 05, 06, 07, 08, 09, 10

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