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C&L Cat-Back Exhaust with Polished Tips (15-17 Mustang GT Fastback)

Item 412120
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$794.99 (kit)

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      Video Review & Installation

      Justin: The C&L Cat-Back that we have here today will be a great option for the 2015 through 2017 GT owners looking for a premium build and premium sound but at a very budget-friendly price point. Now, interested S550 owners can look forward to a full stainless build throughout including the straight-through perforated tube mufflers and included X-pipe, all exiting out the rather large 4.5-inch slash cut tips. Price points can live in that mid to high $700 range, and the install, at least according to the site, is gonna get a pretty solid 2 out of 3 wrenches on the difficulty meter, maybe take you a couple of hours to bolt up from start to finish. But if you hang with me for a bit, we'll walk you through that job later in the video. But as is tradition, let's just get right into the sound you can expect with the C&L system. And as you guys heard with our sound clips at the top of this video, I feel the C&L is noticeable, it's angry, it's muscular, but it's not ridiculous. And that's probably one of the best things I enjoyed most about this particular system.Listen, if you want the loudest GT on the block, well, there will be more aggressive systems at the end of the day. But if you're looking to make just enough rumble without driving the wife or the neighbors crazy, well then, this might just be the option for you. So, with all that said, breaking out my patented wake-the-neighbor scale, I got the C&L coming in at a very strong three out of five on my one to five or one-to-wake-the-neighbor scale. Now, inside the car, on the other hand, things do remain relatively quiet with only a little bit of noise coming through at cruising speeds, which is pretty much the case with most of your aftermarket systems. But with the sound pretty much covered, let's move into your quality and construction and nothing but thumbs up here for me, guys. This is gonna be one of your more affordable full stainless options for the early S550 5-liter Powerplant and one that's done very well at this price point. Now, 409 grade stainless to be exact for most of your components, mid-level material, no doubt, behind that 304 on the top end, and of course you got that aluminized steel rounding out the bottom end.Now, the 409, definitely a solid material that will offer great corrosion resistance and should easily last the life of your S550 at home. Now, aside from that stainless material, you're also gonna be looking at 3-inch mandrel-bent tubing throughout, which as an added bonus gets this nice little polish to it from tip to tip, certainly something you don't see with a lot of other cat-backs. Now, that 3-inch tubing does include your X-pipe here which is going to lead into your twin polished mufflers, again you're looking at that straight-through perforated tube design. This is something I like because it is a very free-flowing setup but that perforated tube is gonna take some of the edge off of the traditionally raspy Coyote. Last but not least here, everything is going to exit out of the large 4.5-inch slash cut tips which do fill out that rear balance rather nicely. Now, as you guys can see with this particular option, C&L does give you the polished tip, but if you're interested, you could also grab this same exact cat-back with black tips instead for an identical price point. And that's nice because something like that, typically companies are gonna offer you or charge you, I should say, another 100 plus bucks to grab a different color tip, not the case here with the C&L. Both are available at this price point.Last but not least here, guys, C&L does include the step-downs that will allow this to work with your factory manifolds or a factory connection in addition to a set of aftermarket headers, and of course they got all your clamps needed for the install. Now, this is a 100% bolt-on job, guys. It doesn't require any cutting, any modification, anything like that at all. But to give you a better idea of what you can expect when underneath the car, check out our detailed walkthrough and tool breakdown now.Man 1: Tools used in this install include an impact gun or a ratchet, an extension, 13-millimeter and 15-millimeter deep sockets, flathead screwdriver, and a mallet.Man 2: Hey, guys, we've already covered this uninstall. So we're gonna look at some of that footage and then we'll come right back in with the install.Man 1: First step here, guys, grab a 15-millimeter deep socket, we're gonna loosen up but not completely remove the nuts on both of the band clamps here connecting your factory resonator to your headers. So, we're just gonna loosen these guys up. All right. Next step, we're gonna be at our rear subframe, right behind our diff. Now, you'll see these hangers connect to the subframe itself using two 13-millimeter bolts. Now, we don't have to remove the hangers from the isolators, we're actually just gonna unbolt the whole isolator bracket from the frame. So grab a 13-millimeter socket, and I like to use an extension to go right over the sway bar and we're gonna remove these. Now from there, what I'm gonna do is just lift up on this and swing these guys down. There's a little locking tab here that just hooks in, we just wanna unhook that. So, you may have to lift up on the exhaust and then bring it down. All right. Next step before we remove the whole exhaust in one piece, I recommend grabbing WD-40 or something similar with this needle here to just lubricate the hanger above your tips. This is gonna make removing it a whole lot easier. All right. Do the same thing on the other side. Next step, guys, we're gonna take our exhaust off all in one piece. Now, you may want a helping hand if you're using a lift like we are. If you're working on the ground, it might be a little easier for you to do it by yourself. I'd recommend having a mallet to knock these band clamps back a little bit, disconnect it from this side, swing it back to the front of the vehicle and set it aside.Man 2: First thing we're gonna do with our install is reinstall our exhaust hangers. We took them off in the uninstall. I have them all back in with my 13-millimeter. And now that we have these all back in place, now we're gonna go to the front and install our adapters. So now that we have our hangers on, what we're gonna do is install our adapters. Because the front pipes here are 2-inch, we're going into a 3-inch exhaust. We're gonna slide these in, reuse our band clamps from our factory, I'm gonna hold them in place, I'm going to take my 15-millimeter, tighten our band clamps back up. Now I can install our midpipe. So, now we're gonna install our midpipe. What I'm gonna do is install my clamps on first so I don't forget them, and I'm gonna face them the same way when I tighten them up as the original band clamps, then we'll take our midpipe. I have a pole jack, if you have a jack at home, if you're doing this on the ground, you can use a pole jack or a floor jack. And I'm gonna line that up, slide it into place, use my pole jack to hold it up. I'm just gonna [inaudible 00:08:57] it back here, right there. And we're gonna get it pretty much in the tunnel from the square in the center. Make sure it slid on far enough, and we'll just get our band clamp started because we're gonna have to move it around for fitment once we get the rest of the exhaust on.So now I have everything lined up. I'm gonna just snug our 15-millimeters up here. That way, we'll come back when we get the rest of the exhaust on and then we'll tighten everything up. Now we're gonna install our axle pipe. I already put my clamp on. I also put my clamp with the nut facing down so it's easier to tighten up. I'm gonna take that, get it in my hanger here, and get it in the pipe and the hanger at the same time. Slide it in. Now, what I'll do is I'll just give this a little snug because I wanna be able to move it. That's good enough. Now we'll install our muffler on this side. So now we'll install our muffler. I'm gonna put it through the upper hanger first and get it to go through. I already stuck my clamp on, the muffler is through, I'm going to snug our 15-millimeter clamp up. I'm gonna leave it loose now. Now we'll install our axial pipe on the passenger side. I'm gonna get it so it lines up with the bracket. I have my clamp already on, make sure it's about the same as the other one so it lines up and looks right. Take my 15-millimeter, tighten that clamp up. I'm just gonna snug it because we're gonna tighten them up at the end. Now we'll install our muffler. I'm gonna put it through the hanger first, and then slide it over my pipe like that. I already put my clamp on, so I'm gonna take my 15-millimeter and snug this up.Now that we have the whole exhaust on except for the tips, I'm gonna start in the front, start tightening things up, getting things level where I want them. It doesn't hurt to take a step back, look at everything to make sure it looks nice underneath the car, mufflers aren't cockeyed. Now I'm gonna start up front, take my 15-millimeter. We wanna hit him pretty good so it doesn't move. Now I'm gonna line everything up and tighten these four clamps up. Now, finally, we're gonna put our tips on. We're gonna wanna just slide it on, kind of get it to angle with the contour of the body. I'm gonna tighten the 15-millimeter up here, and now you're gonna wanna just repeat the same procedure on the other side. That wraps up this review and install of our C&L Cat-Back Exhaust with Polished Tips for '15 to '17 Mustang GT Fastback. Thank you for watching, and for all things Mustang keep it right here at

      Product Information

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


      • Aggressive Performance Sound
      • Improves Exhaust Flow for Better Performance
      • Oval, Straight-through Perforated Mufflers
      • Cross-Over X-Pipe Included
      • Mandrel-Bent 3-inch Diameter 409 Stainless Steel Tubing
      • Polished, 4.5-inch 304 Stainless Steel Exhaust Tips
      • Simple Bolt-on Installation
      • Fits 2015-2017 Ford Mustang GT Fastback Models


      Aggressive Performance Sound. Add an exciting exhaust note to the sound of your GT Mustang's exhaust with a C&L Cat-Back Exhaust System. This C&L Cat-Back Exhaust features a pair of oval, straight-through perforated mufflers that will produce an aggressive performance sound under acceleration, but a mellow tone at idle. Besides an increase in sound, this Cat-Back, with its full mandrel bent piping, will reduce restrictions giving your Mustang a more free-flowing exhaust for gains in both power and performance.

      Quality Construction. C&L proudly manufactures their Cat-Back Exhaust systems from mandrel-bent, 3-inch diameter, premium grade, 409 stainless steel tubing for excellent exhaust flow and enduring corrosion resistance. Besides the high-flow, crossover X-pipe, this system features a pair of oval, straight-through perforated mufflers that end with a set of 4.5-inch, polished, 304 stainless steel exhaust tips.

      Bolt-On Installation. C&L engineered their Cat-Back Exhaust to be a direct bolt-on upgrade replacement. This Exhaust System will easily bolt straight up to the factory piping for an easy straight forward installation. Clamps and instructions are provided.

      Application. This C&L Cat-Back Exhaust with Polished Tips is designed to fit 2015-2017 Ford Mustang GT Fastback models.



      C&L 412120

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Reducers
      • (1) X-Pipe
      • (2) Under Axle Tubes
      • (2) Mufflers
      • (2) Exhaust Tips
      • (8) 3-inch Exhaust Clamps

      Customer Reviews (9)

        Brand Image

        Reviews of C&L Exhaust products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang