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SR Performance After-Cat 3 in. to 2.75 in. H-Pipe (11-14 GT)

Item 403366
Market Price $351.99 You Save 12% ($42.00)
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    Features & Details

    • Improves Exhaust Flow for More Power
    • Classic Muscle Car Sound
    • H-Pipe Design
    • 3" to 2.75" Mandrel-Bent Tubing
    • Stainless Steel Construction
    • Smog Legal - When Reusing Your Stock Catalytic Converters
    • Off Road Use - When Using the Included 3" Cat Delete Downpipes
    • Designed for use with Stock Manifolds or Shorty Headers
    • Fits 2011-2014 GT Mustang Models
    Improves Power. Add even more horsepower and torque to the rear wheels of your 5.0 coyote Mustang with a SR Performance After Cat H-Pipe. The SR Performance high flow H-Pipe significantly improves your GT's exhaust flow to increase overall performance. This SR Performance H-Pipe is designed to be used with SR Performance's shorty headers or the factory manifolds.

    Muscle Car Rumble. This free flowing SR Performance Mid Pipe for your 2011-2014 5.0-powered GT not only increases power, but it also adds a deep muscle car rumble to the sound of your exhaust with its classic "H" crossover pipe design.

    Street or Off-road Use. The SR Performance GT H-Pipe bolts up directly behind the factory catalytic converters with no cutting required making your Mustang 100% smog-legal. Or you can install the included stainless steel "cat delete" downpipes for even more power making your H-pipe perfect for off-road use.

    Quality Construction. SR Performance manufactures their After Cat high-flow H-Pipe to last using durable 3" stainless steel tubing that steps down to the factory 2.75" diameter. With its smooth, precise mandrel bents, there are no kinks to rob you of power.

    Reuses Factory Cat-Back. This 3" to 2.75" SR Performance Mid Pipe can reuse the factory catback exhaust or an aftermarket catback exhaust system with a 2.75" pipe diameter.

    Application. This SR Performance high flow After Cat H-Pipe is designed to fit the 2011-2014 GT with either the factory exhaust manifolds or aftermarket shorty style headers installed. Reuses the stock Catalytic Converters.

    SR Performance

    Fitment: 2011 2012 2013 2014 Details

    MPN# 1785SH

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) H-pipe
    • (2) down pipes
    • (4) Bolts
    • (4) Nuts
    Installation Info
    Tech Specs
    Style Mid Pipe: Standard "H" Type Headers Required: Shorty or Stock Manifolds
    Piping Material: Stainless Steel Piping Size: 3" to 2.75"
    Catalytic Converter: Reuses stock Catalytic Converters Fitment: 2011-2014 GT Mustangs
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (16)

        5 Top Rated Questions

        How would this sound on a 2014 GT with Flowmaster Outlaw Axlebacks?

        • The Flowmaster outlaws offer a very aggressive exhaust tone as is. When combined with this h-pipe, you'll definitely notice a difference in the overall tone of the exhaust. Being the exhaust is already fairly loud though, it may be slightly less noticeable, but you will see an increase.

        Helpful (3)

        Is this a good first mod to a stock gt?

        • The SR Performance After-Cat H-pipe would be an excellent first modification if you are looking for some additional power and sound from your 2011- 2014 Mustang GT. Just keep in mind that if you decide to delete your catalytic converters you would require a tune.

        Helpful (1)

        Can I use pypes 1 7/8 long tube headers with these?

        • No, this is not compatible with longtube headers.

        Helpful (0)

        Would this get much louder with roush axle backs already on the vehicle (2012 GT)

        • Yes, aftermarket h-pipes will generally provide a more muscle car-like growl.

        Helpful (0)

        Will these make the check engine light come on?

        • When reusing your stock catalytic converters, it will not cause a check engine light.

        Helpful (0)
        Post Your Question
        10 More Questions
        What is the little clamp on the pictures for? Honest question. I see that the H pipe has it while the X pipe doesn't. 1 answer
        Can a band clamp be used for the cross over pipe instead of the u-bolt clamp? If so what size would be needed? 0 answer
        Is this exhaust bigger than the stock exhaust in diameter? 1 answer
        Will this fit LTH long tubes since they can bolt up to the stock manifolds? 1 answer
        Installed bbk long tube ceramics on my 12 gt. Previously had cat delete shorty pipes and the tune required. Looking for an H pipe to connect the remaining exhaust to the headers. Any ideas? Fred, Michigan 1 answer
        Will the H Pipe Fit Longtube Headers 1 answer
        Would it work with the boss 302 manifold? 1 answer
        Will this fit a 2014 V6? 1 answer
        can this be modified to fit on a v6? 1 answer
        How much hp would I ideally pick up with the cat deletes, h pipe and tune? 1 answer

          Customer Reviews (3) Write a Review

          Overall Rating 4.7

          out of 5 stars

          Installation Time:Afternoon

          • Loudness / Volume 4 4
          • Exhaust Note 4.666667 4.7
          • Fit & Finish 5 5
          • Bang For Your Buck 4.333333 4.3

          • 5/5

            Installation Time: Afternoon

            June 02, 2018


            Hardest part of the install was getting the stock stuff off (I deleted the cats also) went on easily and sounded good. Had one small leak where the two halfs of the h pipe meet but a little adjusting and really tightening the clamp fixed that. Would be nicer with a sleeve clamp at that location but it works fine as it. If you remove the cats on your car it will be louder,...take into consideration with you muffler choice. No cats straight through mufflers sounds terrible. I went back to a gt500 muffler setup with the h pipe and couldn't be happier


            Year: 2013 Submodel: GT

            Helpful (17)

          • 4/5

            Installation Time: Afternoon

            May 01, 2018

            H pipes

            was way to loud for my taste, but great pipes......


            Year: 2011 Submodel: GT

            Helpful (15)

          • 5/5

            Installation Time: Less than 1 Hour

            March 08, 2018

            Simple ungrade

            Goes on easy, looks better than the stock H and adds the rumble and downshift crackle... might be a good idea to have the cross pipe welded to insure no leaks


            Year: 2013 Submodel: GT

            Helpful (19)

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