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Roush Cut and Clamp Resonator Delete X-Pipe (15-21 GT)

Item 394218
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      Video Review & Installation

      Hey guys, Stephanie with here with an overview and install of this Roush Cut and Clamp Resonator Delete X-Pipe, available for 2015 and up GT Mustangs. In this video, we're gonna be talking about a few things, including the sound of this X-Pipe and the install. I'll talk more about this later, but the install for this is gonna be a two out of three wrenches since you will need to cut. This Resonator Delete X-Pipe from Roush is going to replace the factory resonator that's restricting to the new GT. It's gonna be a good option for someone that's looking for a stainless steel mid-pipe that's gonna open up a good amount of sound easily and quickly. Swapping out the resonator-style mid pipe for a traditional style mid pipe like this X-Pipe is a way to get around having to purchase an entirely new exhaust system in order to make a big change in the tone of the exhaust. The factory resonator style mid pipe is basically another muffler on the S550 GT, that muffles sound and power. So, by eliminating this muffler or the resonator style mid pipe, and replacing it with a standard type of mid pipe that's free-flowing like this X-Pipe, you're getting rid of a bottleneck. And you can expect a good amount more volume from the exhaust even without changing the factory axle-back or any other components.This X-Pipe does reuse the factory cats, so you're still gonna be smug legal and still pass emissions and get the change in sound that I've talked about. So, that should give you a good idea of just how restrictive the factory mid pipe is. This is stainless steel X-Pipe and material is something that you should always consider when you're shopping for exhaust. So, the material of the mid pipe is really gonna drive the price point. And this X-Pipe being stainless steel, is gonna drive up the price point a touch. But stainless steel does have some upsides to it. This type of material is gonna last much longer and have much better corrosion resistance than other materials like aluminized tubing. If the material and life span aren't something that you're concerned about, or you live on the West Coast or your car isn't a daily, then it may not be a big deal to you.If you're looking for a long-lasting system that can handle the weather, you're better off shopping for something made with this type of material. This is a cut and clamp mid-pipe which means that you cut out and remove your factory resonator and clamp the X-Pipe into place. That's how you are able to reuse your stock cats. But, it also means that you can pair it with your stock mufflers or you can run it with an aftermarket axle-back. So, no matter what axle-back you have, this X-Pipe will work for you and either way, you'll still maintain the use of the stock cats, and you'll still have an improvement in sound.As far as sound goes, this is an X-Pipe and like a typical X-Pipe, you can expect more of a raw spear tone from your exhaust and more volume. If you want more of a deeper note as opposed to the raspy sound, you should stick with an H-Pipe setup instead. And there are a few cut and clamp H-Pipes that are currently available. H-Pipes tend to be a little deeper sounding, while X-Pipes produce a bit more volume with that raspy note. On a scale of one to five, with five being the loudest and keeping in mind that you're still gonna have your stock cats and axle-back, I'd rate this X-Pipe as a two.Of course, if you ever change your axle-back or even your headers for that matter, the X-Pipe is gonna change in sound and volume so, just keep that in mind. Depending on which axle-back you end up going with, you could be looking at more of a three or four on the loudness meter. So, if you don't want a system that's too loud, just keep in mind this mid pipe when you're shopping for other components. Another thing to mention here is that a great side effect of replacing that resonator with an X-Pipe is dropping a good amount of weight. The factory resonator adds some pounds to the S550. So, by replacing it with a simple X-Pipe, you're gonna be dropping about 12 pounds which is just another little plus here. As far as price goes with this X-Pipe, you're looking at spending between $200 and $300 for it. Now, this is one of the more expensive options out there, so there are other X-Pipes that are available in other brands, other materials, and at other price points if you wanna shop around for something else. Either way, swapping your factory resonator out for an aftermarket X-Pipe is a fast and easy way to totally change your exhaust note. As for the install, like the name suggests, there will be some cutting involved but nothing too difficult. Take your time, it's gonna take about two hours to complete maybe less, I'm gonna call it a two out of three wrenches on the difficulty meter, but mainly just because of the cutting that's involved. As usual, a lift would certainly make the install easier and you will need something to cut your exhaust with, so keep that in mind before you start the install. The X-Pipe does come with brand new clamps for the rear, you'll reuse the factory front clamps. But you always have the option of clamping the front and welding in the rear of the pipe if you want, but that's up to you or your shop. A lot of people like welding in the rear better, but that's not something that you have to do.So, wrapping this up here, this is a stainless-steel Resonator Delete X-Pipe that can work with either the factory axle-back or an aftermarket one. It also works with the factory cats and it's gonna create some sound and volume from the GT. It's a great way to inexpensively change your exhaust note and as always, you can check it out more online for yourself. And for all things Mustang, keep it right here at

      Product Information

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


      • Converts Stock "Resonator" Mid-Pipe to an "X" Pipe
      • Reduces Back Pressure
      • Improves Exhaust Flow
      • Raspy Race Car Growl
      • Stainless Steel Construction
      • Cut and Clamp Installation
      • Reuses Stock Catalytic Converters - Smog Legal
      • 12 lbs. Lighter than the Factory Resonator
      • Fits All 2015-2021 GT Mustangs


      Increases Power and Performance. The Roush Resonator Delete-X Pipe Kit replaces the restrictive factory Mid-Pipe Resonator on your Coyote Powered Mustang to reduce back pressure and increase exhaust flow. After installation, you will experience an increase in horsepower, torque and overall engine performance.

      Race Car Growl. Roush's free flowing X-Pipe for the 2015-2021 GT Mustang not only eliminates the factory resonator to help increase power, but it also adds a loud raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

      Reuses Stock Cats. This Roush Performance X-Pipe requires cutting and removal of the factory id-pipe resonator. Then your Roush replacement simply clamps in place reusing the stock clamps. Best of all, it reuses your original factory catalytic converters, saving you money and keeping you smog legal at the same time.

      Lightweight. The Roush Performance Cut and Clamp X-Pipe is 12 lbs. lighter than the factory mid-pipe resonator. It's perfect for street, track and drag racers who are looking to shed unwanted weight in the pursuit of quicker times.

      Stainless Steel Construction. Manufactured from 2.5" diameter free-flowing mandrel bent stainless steel tubing for its durability and corrosion resistance, this Roush Performance X-Pipe will improve exhaust flow and last a lifetime.

      Warranty. Roush Performance is so confident in the quality and workmanship of their Cut and Clamp Resonator Delete that they back it with a 3-Year Limited Warranty.

      Application. The Roush Performance Cut and Clamp Resonator Delete X-Pipe is specifically designed for use on the 2015-2021 GT Mustangs equipped with the coyote 5.0L DOHC V8 engine, including Fastback and Convertible models.

      Fitment: 2015 2016 2017 2018 2019 2020 2021 Details

      Roush 422046

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) X-Pipe
      • (2) Band Clamps

      Tech Specs

      Mid Pipe Specifications
      Style Mid Pipe: "X"Type Headers Required:Shorty Headers or Stock Manifolds
      Piping Material:Stainless SteelPiping Size:2.5"
      Catalytic Converter:Reuses stock Catalytic ConvertersFitment:2015-2021 GT

      Customer Reviews (100+)

        Reviews of Roush Exhaust products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 19, 20
          • GT - 15, 16, 17, 18, 19, 20, 21
          • Mach 1 - 21

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