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MBRP 1-7/8 in. Long Tube Headers w/ Catted H-Pipe (11-14 GT)

Item 390869
Market Price $1,695.99 You Save 12% ($196.00)
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$1,499.99 (kit)

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    Features, Video & Details

    • Increases Horsepower and Torque
    • Raspy Race Car Growl
    • 1-7/8" x 3" Long Tube Header Design
    • Free Flowing 1-7/8" Mandrel-Bent Tubing
    • T304 Stainless Steel Construction
    • High Flow Catted H-Pipe Included
    • Compatible with MBRP Street, MBRP Race or OEM Cat-Back
    • Fits All 2011-2014 GT Mustangs

    Review & Installation Video

    Review & Install Video

    Hey guys. Stephanie with here with a review of this MBRP Long Tube Header and Mid-Pipe Kit available for 2011-2014 GT Mustangs. In this video, we're going to be looking at a few things in regards to this kit. We're gonna talk about the materials and construction of the headers and the mid-pipe and the install, too. We'll talk more about this later, but I can tell you right now that long tube headers make for a difficult install. So, I'm gonna call this one a three out of three wrenches on the difficulty meter. This kit from MBRP that includes long tube headers and a matching mid-pipe are gonna be a good option for someone looking for a natural finish, catted, long tube header for both performance and sound gains. This kit comes with your matching shorty mid-pipe and makes way for continuing three-inch cat back.If we start with the heart of this kit, we'll be looking at the headers. Long tube headers are gonna offer both performance and sound gains, but the end result of your headers will depend on the rest of your setup. The runners on these particular headers are one and seven-eighths inch which is slightly different than the one and three-quarter inch offering. Traditionally you see forced induction cars running a larger runner and NA cars running smaller runners, but I wouldn't really say that that's a hard and fast rule especially with the Coyotes. So you don't have to have a blower to run a one and seven-eighths inch diameter. You just need to keep in mind your current mods and the goals that you have for your car when you're looking around, as well as what going with this size runner will do to your power band with the mods that you have. If you have some bolt-ons and you're still NA, you might see a hit on your low-end torque, but once you spin the Coyote motor up, the larger diameter is gonna help keep things moving, so what you're gonna see are top-end gains. Getting into the specifics here, these are a 304 stainless steel header that have a natural or a raw finish, which is gonna be different than a chrome or ceramic-coated header. It obviously doesn't have the polished appearance that a chrome header would have. While these do not have the ceramic coating either, they are made from that 304 stainless steel tubing, so you won't have to worry about corrosion. And not to mention you do get to see beautiful welds since these have that raw finish. And this is manual bent tubing which is gonna help with smoother air delivery. The primary tubes then merge down to a three-inch collector, and MBRP has these header flanges here that are laser cut and they do that to prevent leaks and create a good fit. Then you have your mid-pipe right here, which is an H-pipe. Now typically speaking, we see H-pipes producing more of a deeper sound than a louder sound, especially when we compare it to the sound of an X-pipe. This mid-pipe is a three-inch mid-pipe so just keep that in mind. And if you guys didn't know already, when you change your header setup to a long tube setup, you also need to change your mid-pipe to a shorty mid-pipe in order to work with the long tubes. So it's nice that these are already paired for you. It takes the guesswork out of the equation. If we move on to price, as well all pretty much know or you know if you've been shopping for long tubes, that they're pretty much gonna be a solid investment. They're pricey and they're difficult to install. The option from MBRP, since they are a higher quality item that's more at the top of the food chain, are gonna be on the more expensive side. The one and seven-eighths inch option that we have here are gonna be slightly more expensive which isn't unusual to see. You do tend to see a larger runner size costing more than a smaller runner size but not usually by very much at all. You're looking at spending between $1300 and $1400 for this kit which does give you a little bit of price break than if you were to buy these pieces individually. So this does sound pricey initially, but do keep in mind that you won't need to buy your shorty mid-pipe since it's already in the kit. And this is why I called long tube headers an investment earlier. You do have to keep in mind all the benefits and power that you'll be getting from this setup. And to put things into perspective, it's not just MBRP that's gonna be expensive. You're gonna be looking at headers costing over $1,000 anyway. As for the install on this one, long tubes are always gonna be a difficult install. I don't say this often, but if you don't have a helping hand, or you don't have much experience, it might be better to just take the car to a shop for the install. If you do tackle this yourself, it's gonna be a full three out of three wrenches on the scale and a day in the garage, especially considering that you're gonna be installing this mid-pipe with these headers. You can do this on a jack and stands, but a lift would make it easier for sure. You're going to need your toolbox for this one with an assortment of different sockets, wrenches, and extensions. You're looking at things like disconnecting the steering shaft, dropping the starter, and removing a motor mount. A lot of this install obviously requires working in some pretty tight areas, so while everything is straightforward, getting access and maneuverability in these areas is actually tricky, which is why you need to pull a motor mount on one side so you can raise the motor slightly with a jack to give you a little bit more room. And having a helping hand in this case is really gonna benefit you. But a day of wrestling and some pretty pennies spent on these mods is totally worth it, in my opinion. So wrapping things up with the MBRP long tube catted headers, these are 304 stainless steel headers that come with a matching H-pipe for a mid-pipe and both pieces are three-inch. The headers have one and seven-eighths inch runners and as usual, you can check them out more online for yourself right here at

    Proven Increases in Power and Torque. MBRP offers a great transformation for your Mustang GT, delivering considerable increases in power and torque over stock. This 1-7/8” Long Tube Header and H-Pipe Kit replaces the stock manifolds and cats with high flow upgrades, allowing the 5.0-Liter V8 to breathe more freely. This combo works great with cat-back components from MRBP, sold separately.

    Dyno Proven Construction. Crafted from high quality mandrel bent T304 stainless steel, this 1-7/8" x 3" Long Tube Header with Catted H-Pipe delivers superior exhaust flow for increased power and performance. The included O2 extensions keep the oxygen sensors from throwing out false codes and illuminating that annoying dash light. This LTH and H-Pipe Kit has been through endless hours of Dyno and street testing to ensure you reap all of the power benefits available.

    Installation. This MBRP Header and Mid Pipe Kit offers everything you'll need in one box for a custom fit, including 1-7/8" x 3" Long Tube Headers, High Flow Catted H-Pipe, front and rear O2 extensions, all of the necessary hardware and detailed instructions.

    Recommended Upgrade. To realize the full power potential that this Long Tube Header and Catted H-Pipe combo kit has to offer, AmericanMuscle highly recommends a Custom Tune with a Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. The MBRP Long Tube Header and Catted H-Pipe Kit is a perfect performance upgrade for all 2011-2014 GT Mustangs equipped with MBRP Street Cat-Back Exhaust, MBRP Race Cat-Back Exhaust or OEM Exhaust System.

    Fitment: 2011 2012 2013 2014 Details

    MPN# S7243304

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Long Tube Headers
    • (1) Catted H-Pipe
    • (3) Clamps
    • (4) O2 Extensions
    • Installation Hardware
    Installation Info
    Tech Specs
    Header Specifications
    Header Type:Long TubeFinish:Natural
    Type Mid Pipe Required:Shorty - IncludedFitment:2011-2014 GT

    Mid Pipe Specifications
    Style Mid Pipe: Shorty H-PipeType Headers Required:Long Tube - Included
    Piping Material:T304 Stainless SteelPiping Size:3"
    Catalytic Converter:Yes - CattedFitment:2011-2014 GT
    Will it fit my Mustang?

      Customer Photos (3) Submit Your Photo

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        Questions & Answers (19)

        5 Top Rated Questions

        Will this MBRP Long tube header with the catted H-Pipe kit, fit my Borla atak catback system? Currently trying to get long tube headers that will let me pass emissions with no codes.. thanks!

        • This MBRP long tube header and H-pipe will not fit with the Borla ATAK catback system unless you purchase a step down pipe to conjoin the H-Pipe to the catback. The H-Pipe piping size is 3" and the Borla ATAK is 2.75" which will require custom modification to use together.

        Helpful (5)

        Is this header and h pipe kit 49 state street legal?

        • As long as your state is not adopting the California CARB regulations, this header and mid pipe combo will be legal in your state.

        Helpful (2)

        Will this pass emissions?

        • The legality of this product will vary depending on your state and their emission regulations. We highly recommend consulting your local driving ordnance or DMV to confirm if this is a product that is legal for use upon highway.

        Helpful (1)

        I have Roush axle backs. Will they be able to go along with this set up?

        • The MBRP Long Tube Header and Catted H-Pipe Kit will have no issues working with your Roush Axle Back exhaust.

        Helpful (1)

        i have the flow master outlaw series cat back with these bolt up together?

        • The MBRP Long Tube Header and Catted H-Pipe Kit is designed to bolt up to the MBRP Street Cat-Back Exhaust, MBRP Race Cat-Back Exhaust or OEM Exhaust System. It may not be a direct bolt on to the Flowmaster Outlaw Series Cat-Back.

        Helpful (1)
        Post Your Question
        10 More Questions
        Will this bolt up to stock over axle pipes. 1 answer
        Will They Bolt Up To Magma Flow Cat Backs 1 answer
        Is it tune required when installing these? Since they do still have cats. 1 answer
        Installed these, took all day... sound great! But it’s rubbing on a bolt and the steering shaft. Has anyone fixed this after they installed? 1 answer
        Will this kit work with the cervini side exhaust kit on my 14 gt? 1 answer
        I have a Borla touring axle-back and everything stock. Is it compatible with the stock over axle pipes? Can I run this setup without a tune, it wont hurt the engine right? 1 answer
        I have the flowmaster outlaw series axleback exhaust. Since the pipes from the cat to the actual exhaust is still stock, will it fit my car or no? 1 answer
        Would this set up be good with the procharger stage 2 kit for my 14 gt auto? 1 answer
        Can I use the SLP Loudmouths with this setup? 1 answer
        What kind of sound am I going to get from this set up? I really don't like the raspy sound. I have the Roush axle back now. If I put this long tube headers and H pipe on will I Wake the Dead? 1 answer

          Customer Reviews (8) Write a Review

          Overall Rating 4.2

          out of 5 stars

          Installation Time:Weekend

          Installation Cost:$500-$1000

          • Loudness / Volume 4.75 4.8
          • Exhaust Note 4.75 4.8
          • Fit & Finish 4.375 4.4
          • Bang For Your Buck 4.25 4.3

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $1000+

            February 13, 2019

            Long Tube Headers

            The product is premium. The fitment was very tight but workable. The steering shaft is too close and all adjustment has been made. Sounds great.


            Year: 2013 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            September 18, 2018

            extremely loud

            love these mbrp header along with the hi flow catted h pipe... paired this with the mbrp race exhaust and my car now is extremely loud and a head turner... love the loundness and added hp when tuned properly


            Year: 2013 Submodel: GT

            Helpful (1)

          • 1/5

            Installation Time: Full Day

            October 30, 2017

            Well not pass emision test

            High flow cats well not work 2012 mustang gt they well not tell you this and they well probably erase this


            Year: 2012 Submodel: GT

            Helpful (14)

          • 5/5

            Installation Time: Full Day

            July 23, 2017


            very nice fitment look great under the car. easiest way to install is to drop the sub frame you have so much more room. i also used the factor studs with the factor locking nuts so that there is no leaks. you have to shave the studs down a little for it to fit but other than that i would recommend doing it that way. sounds really good only issue i have is on high speed right turns they hit my steering shaft


            Year: 2012 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Full Day

            May 04, 2017


            I knew these would make a difference, but didn't realize just how much of a difference it would make. The sound is incredible and doesn't have that loud rasp, it keeps a throaty tone all the way through the RPM range. I feel a significant pull in the higher RPMs after this install with BAMA tune. If you're on the fence about buying these, just pull the trigger.


            Year: 2014 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $500-$1000

            April 11, 2017

            Worth every penny!

            I was on the fence for awhile whether or not I wanted to commit to these and man am I glad I did! If you're thinking of getting headers I highly recommend them. The sound is alone is worth it imo. If you're listening to videos on YouTube you're not doing yourself any favors, go out and listen to these in person. Videos do not do exhaust sounds any justice. I don't think there's much of a sound or performance difference between brands. Pick the brand you feel comfortable and pull the trigger, you won't be disappointed.


            Year: 2012 Submodel: GT

            Helpful (5)

          • 4/5

            Installation Time: Weekend

            March 28, 2017


            Did the installation myself, pretty hard but doable and the only problem I have is that my driver side header hits my steering shaft at certain times, other than that, makes the car sound way better


            Year: 2013 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            October 23, 2016

            Great exhuast!

            Wow this product is excellent! Thanks American Muscle!


            Year: 2012 Submodel: V6

            Helpful (5)

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