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Corsa Xtreme Cat-Back Exhaust with Gunmetal Tips (18-20 GT Fastback w/ Active Exhaust)

Item 404906
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      Video Review & Installation

      Hey guys. Today we're gonna be taking a look at and installing the Corsa Xtreme cat-back exhaust with gunmetal tips for 2018 GT Mustangs that have active exhaust. Now, you're gonna wanna be checking this out if you're looking for one of the loudest cat-backs that's currently available for the 2018 GT Mustang that has active exhaust. And not only does this thing deliver on both sound and volume, but it's also top of the line when it comes to quality, fitment, and materials. This cat-back is definitely gonna be for someone who doesn't mind paying for all of those qualities. It cost about $2,300. When it comes to the install, I'll call it a two out of three wrenches in the difficulty meter. As far as loudness goes, I'm definitely gonna call this one a five out of five in the loudness meter with one being a quiet upgrade and five being a very loud upgrade. Do keep in mind though that this is an active exhaust cat-back which means that you can quiet it down when you want to or when you need to. When it's in quiet mode, I actually call it a one out of five on the loudest theater. With all that being said, let's go ahead and show you how to get this installed. For this install, we used a 10 millimeter socket, 11 millimeter socket, 13 millimeter socket, a 15 millimeter socket, a small extension, a three-eights impact gun, and a rubber mallet is always nice to have. All right guys, so we can drop our factory cat-back as one big piece, and that's what we're gonna do. We'll start by loosening the clamps up here in front of the resonator and these are 15 millimeter. All right guys. Now we're gonna move towards the back of the car. And I personally like dropping the exhaust with the hanger still attached. So these are 13 millimeter bolts here. We'll go ahead and undo those. We are gonna leave the hanger still clipped into the body. This will actually hold the exhaust up for us. All right. And now we'll move to the hangers at the very back of the car. All right. So this is an active exhaust car. Before we move the exhaust, we will need to disconnect our active exhaust, which is this connection right here. All right. We're gonna go ahead and move over to the other side and do the exact same thing on the other side. We'll remove both hanger bolts but leave the hangers clipped into the body still. All right. We'll also disconnect to the electrical connection on this side as well. All right guys, at this point, you're ready to remove the cat-back. You might need a second set of hands to help you out. I'm gonna call in a second set of hands. What we're gonna do is we're going to remove the hangers from the body of the car first and then we'll push back and release from these clamps here. All right guys, so there's a ton to say about the Corsa Xtreme cat-back. It is the loudest cat-back system in the Corsa lineup and arguably one of the loudest cat-backs that you can pick up for the 2018 Mustang. This is active exhaust compatible. And the cool thing about that is for those of you that thought the Corsa Xtreme could be a little bit too loud before, you now have those four exhaust modes that you can put the Corsa Xtreme through. So if you guys need to quiet this thing down, if you wanna quiet it down at any time, you always have the option to do that. And it's pretty cool to get a different tone range from the Corsa Xtreme than just a standard note. So this is made of 304 stainless steel, and it is a three inch system. It does come with adapters, which we will use today, which means that you can bolt up to your stock cat pipes if you want to or you can run a full three inch system. It comes with the Corsa Double Helixx X-pipe. So traditionally speaking, an X-pipe gives a different tone than an H-pipe. It's a little bit louder. You have more volume and a little bit of raspy notes to it. And the Double Helixx X-pipe that Corsa gives you just gives the exhaust a little bit of a different path than a standard X-pipe does. You then have Corsa's straight through mufflers. So once again, these are loud, and the cool thing about it is that you can tone it down with the active exhaust if you want to. These also have absolutely no drone at all which is great from such a loud system. And the entire system ends in four inch gunmetal tips, which are a little bit different. You have another option other than black here. With all that being said, we're gonna go ahead head and get the Corsa installed on the car. All right guys, so we need to transfer over our hangers from our stock cat-back over to the Corsa. You might wanna use a little WD-40. I use some PB B'laster. It just helps get things off a little bit easier. The next thing we have to do is swap over the actuator. So, Corsa gives us this tip which is all perfectly set up for us. All we have to do is remove the three bolts that are holding the one in place on our stock cat-back and transfer it over to this tip. So these are 10 millimeter nuts here. We'll go ahead, remove them and then pull off the actuator. One thing to keep in mind is that both the tips and the actuators are side specific. So just make sure when you transfer these over, you're transferring over to the correct side. So our passenger side actuator will need to go on the passenger side tip on the passenger side of the new Corsa. There's also a little spring in here which will show you guys in one second. We have to make sure that we grab the spring out of here and install it in the new Corsa tip in the correct orientation. All right. So this spring actually stayed in the actuator which is great news for us. All we have to do at this point is just go ahead, set this in the new Corsa tip and leave it just like it is. All right guys, so Corsa gives you new hardware for the actuators. So just make sure you switch over to the new hardware. We'll go ahead, we'll grab our tip. Once again, we're gonna make sure that we have the correct side. We will lay our actuator in place. You guys will see, this spring, this piece right here needs to sit very specifically in the actuator here. There's a little groove in the actuator for the spring to sit in. So we're gonna go ahead. We can actually turn our actuator to help us get this lined up correctly, which is what I'm gonna do. I'll use my hand to rotate the actuator so I can get the spring lined up properly. Now that it's lined up you guys can see my bolt holes are a little bit off. So I am working with a spring here so there is gonna be a little bit resistance. So I'm going to hold my actuator with one hand, gonna grab my hardware and start threading these in place. Just know that a little resistance here is actually necessary and it's going to happen. Just make sure you don't cross-thread your bolts. All right. Now we'll tighten down. From here, we'll go over and do the other side. Got lucky with this side as well. The spring stayed on the actuator. Now we'll do the same thing with this tip. We'll line up our spring in the groove. And once it's sitting correctly, we will just rotate the actuator slightly so our bolt holes line up. All right. And with our actuators taken care of, we can go ahead and get our X-pipe in place in the car. All right guys, so we'll start with our adapters. We'll take the factory band clamps off of the front of the resonator and put them on our adapters. We'll go ahead and slide these in place now. And just like with any exhaust install, we're gonna leave all of our clamps loose until we have everything lined up and in place. All right guys, so now I have our Corsa Double Helixx X-pipe. I also have a pole jack here that's gonna help me. What I'm gonna do is I'm gonna slide this end into our adapters here. I already have two clamps on the pipes waiting. Just be sure that before you install your X-pipe, you have clamps on there. The X-pipe installs this way with the Corsa bracket facing down. Go ahead, slide these into place. I'm just gonna grab our pole jack to hold the X-pipe up for me. All right guys, now we'll grab a muffler assembly. Once again, I already have a clamp in place over the X-pipe. I have my two hangers here, I'm gonna slide this into the X-pipe. Then I'll go ahead and clip the hangers into the body and that'll hold everything up for us. All right guys, we're ready to do the same thing on the other side. We'll slide our muffler assembly in place into the X-pipe and then clip our hangers into place. All right guys, so before we tighten down any of our clamps, what we're actually gonna do is get our tips installed. So Corsa gives you V-band clamp for your active exhaust tip. So you're gonna wanna be using the V-band clamp on the active exhaust side. We take the nut off. We will slide this up and into place. With the clamp in place, we'll go ahead and tighten it. And we will route our active exhaust harness. Plug it back in and clip it back into the body as well. All right. Now we'll grab our other tip. We have an exhaust clamp here. We'll make sure we get a clamp on the tip. We'll get this in place and tightened down and then we'll go ahead and do the same thing on the other side. All right guys, now we're gonna go through and tighten down all of our clamps and our hangers. So we are switching back to the 15 millimeter socket for that. We'll start at the front and move towards the back. All right guys, that's gonna wrap up this review and install. Keep in mind you can always check this cat-back out more online right here at

      Product Information

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


      • Powerful Xtreme Cat-Back Exhaust
      • Loudest, Most Aggressive Sound Level
      • Distinct Rumble at Idle
      • RSC Technology for No Drone
      • Improved Horsepower, Gas Mileage, and Torque
      • Straight-through Design for Added Power
      • 3 Inch 304 Stainless Steel Tubing
      • 4 Inch Dual Wall, PVD Gunmetal Tips
      • Limited Lifetime Warranty Exhaust, 5-Year Limited Warranty Valves
      • Fits all 2018-2020 Ford Mustang GT Fastbacks Equipped with Active Exhausts


      Aggressive Sound. Ensure your 2018-2020 Ford Mustang GT Fastback turns heads on the track and the street by replacing its boring exhaust with Corsa's Xtreme Cat-Back Exhaust with Gunmetal Tips. This high-end exhaust boasts the loudest, most aggressive sound level to guarantee a muscular noise worthy of your powerful Pony. It also features RSC technology to eliminate problem frequencies and drone at cruising speeds while offering a distinct rumble at idle.

      Powerful Performance. Featuring a patented, non-restrictive, straight-through design, this Xtreme Cat-Back Exhaust boasts reduced back pressure that frees up additional power for unbeatable torque and horsepower. In fact, the exhaust offers a 17% airflow increase over stock, which also allows for a drastic improvement in fuel economy so you spend less time and money at the pump.

      Stainless Steel Construction. Made in the USA, this Xtreme Cat-Back Exhaust is custom tuned and made with 3 inch 304 stainless steel tubing for strength and long-lasting durability. The exhaust also comes with dual rear exit twin PVD pro-series tips that are made from 4 inch dual wall stainless steel and finished with a gunmetal coat to add style and resist rust and corrosion damage.

      Installation. This exhaust boasts an easy, bolt-on installation. No welding is required, but moderate mechanical skills are recommended to complete the 2-hour process.

      Warranty. This exhaust comes with a limited lifetime warranty as well as a 5-year limited warranty for its valves. Some restrictions apply.

      Application. Corsa's Xtreme Cat-Back Exhaust with Gunmetal Tips is built to perfectly fit all 2018-2020 Ford Mustang GT Fastbacks equipped with Active Exhausts.

      Fitment: 2018 2019 2020 Details

      Corsa 21001GNM

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Cat-Back Exhaust

      Customer Reviews (7)

        Reviews of Corsa 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 - 18, 19, 20

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