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Corsa Performance Xtreme Cat-Back Exhaust with Black Tips (18-23 Mustang GT Fastback w/ Active Exhaust)

Item 404905
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$2,621.99 (kit)

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      Video Review & Installation

      Today, we're gonna looking at and installing the Corsa Xtreme Cat-Back Exhaust with Black Tips for 2018 and newer GT Mustangs that have Active Exhausts. This is one of the loudest cat-back options that are available. It's also a very high-quality cat-back. That means it's gonna be perfect for someone who doesn't mind paying a little bit more for both quality and sound. And as far as loudness goes on a scale of one to five with one being a very quiet upgrade and five being a very loud upgrade, I'm definitely gonna call this one a full five out of five. The cat-back is made from 304 stainless steel. It's a 3-inch cat-back with 2.5-inch adapter options, and it has 4.5-inch black polished stainless steel tips. The install will be a two out of three wrenches in the difficulty meter, and I'll show you how to get these on the car now.All right, guys. To start the install, we're gonna loosen the two clamps with a 15-millimeter socket at the front of the resonator here. Just keep in mind you don't have to completely remove these nuts. Just make the clamps lose enough so that you'll be able to slide the exhaust out. Next, we're gonna move back and unbolt the hangers here from the body. I will say to leave the hangers clipped into the body still so it holds the exhaust up for you, but we can go ahead and remove these bolts with a 13-millimeter socket. Before we unbolt the rear hangers on this car, this is an active exhaust car so what we have to do is unclip the harness here that's held in by a body clip. Once we unclip the harness, we'll then disconnect the electrical connection. While we're here, we're also gonna pop out the other side. Now we're gonna remove the two 13-millimeter bolts that are holding this rear bracket into place. All right. We're gonna do the same thing on the other side over here. At this point, you're ready to drop the cat-back. I have a second set of hands helping me today, and the way you're gonna wanna do it is you're gonna wanna unclip the hangers from the body of the car first, so unclip the back first and then push forward from the resonator.So, first things first, let's take a look at the factory exhaust compared to the Corsa Xtreme laid out here. The first thing I wanna point out about the Corsa is that it's a full 3-inch exhaust made of 304 stainless steel. They do give you a nice option here. You have these adapters that'll step down to 2.5 inches so you can use this cat-back if you have stock exhaust. Or you have the option of not using these and going with a full 3-inch exhaust all the way through. Then instead of your stock resonator, you have Corsa's double helix X-pipe here which should give you a different sound than a typical X-pipe would. Then you have Corsa Xtreme mufflers which are known to be very loud, but the great thing about this is because this is for an active exhaust setup. If you guys want to, you can just tone it down by going into quiet mode. The other thing is this is very loud, but Corsa made just so it doesn't have any drone in the interior at all, which will make for a great driving experience. Then if we move on to the end, of course, you have the quad-tip design here, and once again, active exhaust feature. So we will be transferring over the actuator from the stock exhaust to the Corsa exhaust.So, the first thing we're gonna do is actually swap over our actuators now. These are three 10-millimeter nuts that are holding the actuator into place, so we're just gonna go ahead and undo those. So now we're gonna take this entire assembly. You guys can see this spring here. You have a plate here as well as your actuator. We're gonna take this entire thing and we're gonna swap it over to the new Corsa tip. Before we transfer the actuator over to the new Corsa tips, I do have to say that your Corsa active exhaust tips are side-specific, so you need to make sure that you have them on the correct side. The way to tell is if you hold your tip with the Corsa etching right at 12:00, your valve needs to sit off to the outside for both tips. So, on the passenger side, it's gonna sit off to the right. On the driver side, it's gonna do the same thing. So you'd see how your Corsa etching is right here at 12:00, your valve is gonna sit off set from that. So make sure you have the correct side before you transfer over. We're first gonna transfer over the passenger side so I have the right side tip here. Now, what I'm gonna do is I'm going to take my actuator with the spring in here.All right, guys. So, with everything lined up in here, Corsa says you will get a little bit of resistance from the spring, and that's okay, and they do that so you don't receive any rattles. So, Corsa also provides you new hardware for this. Instead of 10-millimeter nuts, you have 10-millimeter bolts with some blue Loctite on them. So, what I have going on here is I have my spring lined up perfectly between my actuator and the valve. This can be one of the most time-consuming parts of the actual install. If you don't have your spring lined up properly, then your active exhaust won't work. All right. So we're gonna do the same thing on this side here. We're gonna remove the actuator hopefully, the spring stays intact, if not, no big deal. All right. So I'll show you guys right now exactly what this spring is supposed to look like just in case your spring doesn't stay in the bottom of your actuator during your uninstall or when you're swapping over to your Corsa tips here. So, the way that it's gonna work is this part of the spring sits in the bottom of the actuator, and then you need to get this part of the spring right here in the valve in the Corsa tip. So this part of the spring right here is actually going to sit in between these two notches in the valve. So knowing the way the spring needs to sit, what I'm gonna do here is I'm going to grab the Corsa tip, I am going to sit the actuator on top, lining the bolt holes up first, then I'm going to reach my hand in the other end of the tip and move the valve until the spring is lined up with the notches in the valve. From here, I can push the spring into place and I can actually see through the top of the valve and see whether or not my spring is lined up.All right. So, with our actuators swapped over, we're gonna hold off on installing the tips for now, but we're gonna go ahead and get the rest of the exhaust on the car. One last thing we'll do with our old cat-back first is to swap over our hangers. So we'll grab all four hangers here, throw them on our new cat-back, and then go ahead and get started with our X-pipe install. All right. So you might need a rubber mallet just to help you get these in place. So, since we are installing this cat-back on a stock setup, we're not going with the full 3-inch setup, we will need to use the adapters. The first thing that'll go into place then are the step-down adapters that we're gonna put right into our factory clamps here. Next comes a double helix X-pipe. Make sure you grab two clamps to slide on before you put the X-pipe onto the adapters. And the other thing to mention is you do have a bracket or a brace down here it says Corsa. We want to make sure that that is facing the ground. You don't want to install your X-pipe this way. You wanna install it this way. We'll go ahead, slide this into place now into the adapters. I do have pole jacks under here, so I'm going to grab a pole jack, get a pole jack into place to hold the X-pipe up for me.All right. Next, we'll grab our muffler assembly and slide that into place. You wanna make sure that you slide this end onto the X-pipe prior to clipping your hangers into place, and do make sure you grab a clamp as well. All right. So, once I slide this end on the X-pipe here, I have my hanger clipped into the body. All right. Then from here, I'll clip the muffler hanger in as well. So I'm actually gonna get another pole jack in place here. Now that I have my hangers in place, just because the exhaust is sitting a little bit low so I want to push it up a little bit for now, just to help me line everything up when the time comes. All right, guys. So the same thing on this side. We will get our muffler assembly into the back of our X-pipe and slide it into place, clip our hanger into the body. So, I'm also gonna throw a pole jack under this side too just to help me line the exhaust stuff. I wanna push everything up as high as I can and then get it straight. At this point, before I tighten anything down, I'm gonna put all the bolts back in all of the hangers. At this point, we're gonna tighten all of our clamps starting from the front and moving towards the back. So we're gonna go ahead and tighten the clamps right here first. So, at this point, we're gonna move on to tighten the Corsa clamps, and I just rotate these up and away. I don't really like them when they're hanging down like this. I don't want the clamp to be the lowest point underneath the car. So, you also want to make sure you have your clamp in a good position where you're not gonna have any exhaust leaks. We also wanna make sure when you tighten these that you close the clamp gap completely. So this gap right here needs to be closed. All right. So now we're gonna move ahead and do these two clamps. Make sure they're lined up perfectly and then tighten them.At this point, with our clamps tightened and before we put the tips into place, I'm gonna remove all my pole jacks, see how the exhaust is sitting, and just make sure everything is straight. At this point, we already put the exhaust tips into place, and we are going to start with the active exhaust tip. Now, Corsa gives you these nice V-band clamps for your active exhaust tip. So they also tell you which way this needs to be facing. So you want to install it on the car so the bolt is on the top and the nut is facing towards the inside. So, what we're gonna do is we're gonna take apart the V-band clamp. This is an 11-millimeter nut, by the way, so you'll need an 11-millimeter to tighten this down. You want to make sure your V-band clamp is seated like so. So it's going to grab this flange right here as well as the flange that's on the end of the active exhaust. This is the flange that I'm talking about on the end of the tip. So your V-band clamp is gonna meet this flange with the flange that's on the muffler here. What I'm doing right now is I'm lining the tip up as straight as I can get it, pushing it into place so I can get the V-band clamp into place. All right. So, I need to get the nut back on the end of the V-band right here. All right. Then from here, I can rotate the clamp to the proper orientation. From here, I can tighten it. So, at this point, I'm just snugging the clamp, I'm not tightening all the way down yet. I'm going to install my other exhaust tip then take a step back and make sure it's straight before I tighten it down. So, at this point, we will grab one of our remaining clamps as well as our last exhaust tip. We will slide this on the muffler. We are going to sneak our active exhaust harness up over the muffler and towards the clip on the inside of the car. I'll just leave that there for now. We'll slide our exhaust tip on. Make sure that it's even with our other tip. Get our clamp into place. All right. So since this is a quad-tip setup, we do offset the tips a little bit. You wanna make sure that the nonactive exhaust tip is pushed in and it's flush all the way with your muffler, then you can go ahead and tighten down the clamp. So we're back to a 15-millimeter for that.All right. So one of the last things we'll do before we tighten down our V-band clamp is just connect our active exhaust. So, it's going to snap back into the hanger and the body right here with the body clip, and then we'll just connect our electrical connection. So, I'm just gonna tighten this down with a ratchet. So we're gonna do the same thing on this side. We are going to take our V-band clamp apart, then we are going to slide our active exhaust tip into place. All right. So now we'll slide our V-band clamp into place. Same thing at the other side make sure that it is grabbing the two flanges. All right. So we'll grab the nut real quick, and then we'll rotate our clamp up, get it into the proper position. All right. So, before we get our other tip into place, once again, we are going to get our active exhaust harness up and over the muffler. This body clip right here goes into the body right here, and then we can make our electrical connection. All right. So last thing we'll do is we will get our last clamp on the exhaust tip, and then we will push this exhaust tip into place. So once again, trying to make this as flush with the muffler as possible so that our quad tips are a little bit offset with the outside tip being pushed a little bit further in. I'm gonna use a rubber mallet here just to help me get this thing in place. Now we'll tighten our clamp down.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


      • Cat-Back Exhaust
      • Get the Sound You Want from Your Mustang
      • Heavy-Duty Construction
      • Three-Inch Diameter Pipes
      • Dual 4-Inch Black Tips
      • Valved for Variable Sound Profiles
      • Easy Installation
      • Lifetime Limited Warranty
      • Fits 2018-2023 Ford Mustang GT Fastback with Active Exhaust


      Get the Cat Back. When you’re looking for an exceptional exhaust upgrade for your 2018-2023 Ford Mustang GT Fastback, then you’re going to love what Corsa has to offer. Their Xtreme Cat-Back Exhaust with Black Tips is built to give your Pony better flow and superior sound in any situation, be it on the road or the track.

      Superior Construction. This kit is forged directly from high-quality 3-inch diameter stainless steel. It provides superior resistance to corrosion and road hazards. The mandrel bending process used in making this exhaust ensures that the piping stays completely straight and un-pinched, so your exhaust flows through completely unhindered.

      Black Tips. Your exhaust sounds amazing, but something that brings the looks together from your exhaust is the tips directly at the end. And on these 4-inch tips, you’ve got a deep, shiny gloss black finish, further improving corrosion resistance, while giving your Mustang serious muscle car feel. They’re given valves as well to adjust the tone of your exhaust.

      Installation. You will need either jack stands or a car lift to get to the install site. This should take about 4 hours with the use of hand tools and moderate mechanical experience. If you lack either, please have this installed professionally.

      Limited Lifetime Warranty. This cat-back exhaust is protected by a limited lifetime warranty, defending against material and manufacturer’s defects. Please see Corsa’s full warranty for more details.

      Application. This Corsa Xtreme Cat-Back Exhaust with Black Tips is designed to fit 2018-2023 Ford Mustang GT Fastback models with Active Exhaust. Please ensure correct model before purchase.



      Corsa Performance 21001BLK

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Mufflers
      • (1) Double X-Pipe
      • (1) Driver Side Tip Assembly
      • (1) Passenger Side Tip Assembly
      • (2) Non-Valve Tip Assembly
      • (2) Double X-Pipe Front Adapter
      • Mounting Hardware

      Customer Reviews (459)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Bullitt - 19, 20
        • EcoBoost - 23
        • GT - 18, 19, 20, 21, 22, 23
        • Mach 1 - 21, 22, 23

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