Anderson Composites Rear Diffuser Type-AR Carbon Fiber For Premium Models EcoBoost/GT 2015-2017

Anderson Composites:
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  • Lightweight And Strong
  • Premium Wet Carbon Fiber
  • Durable High Gloss Finish
  • More Aggressive Dimensions
MSRP $1,209.00
You save 10%

Anderson Composites Carbon Fiber Type-AR Rear Diffuser for all 2015, 2016 and 2017 Premium Model EcoBoost and GT Mustangs.

Upgrade the style of your 2015-2017 Mustang to a more aggressive look by ordering this all-new Carbon Fiber Type-AR Rear Diffuser from Anderson Composites. Now available at CJ Pony Parts, this diffuser is designed specifically for your Premium EcoBoost or Premium GT and will easily mount into place for a high-quality, yet still convenient exterior upgrade.

Features & Benefits:
- Strong, Lightweight Design
- Wet Carbon Fiber Construction
- Durable High-Gloss Finish
- Retains Factory Mounting Points & Rear Marker Lenses
- More Aggressive Dimensions
- Reuses Existing Hardware

This rear diffuser from Anderson Composites is a one-piece design that will be a strong, yet lightweight addition to your S550's back end. Manufactured using a high-quality wet carbon fiber construction, this diffuser will help create a true race-inspired style. Its high-gloss finish will show off the weave of the meticulous hand laid carbon fiber. Built to last, Anderson Composites' AC-RL15FDMU-AR diffuser will have more aggressive dimensions, while reusing your factory mount points, rear marker lenses and rear lights. In fact, you'll be able to use your existing hardware for a fantastic upgrade without a whole lot of effort.

Warning: This will require some minor trimming of your OE bumper.

*It is required that you have a Ford premium chassis package or a premium bumper for this rear valance to fit.

Please Note: This rear valance will NOT fit on V6, GT350 or GT350R Mustangs.

Tech Tip: It is highly recommended to use an automotive clear with UV inhibitors to prolong the life and finish of the product.

Anderson Composites specializes in fiberglass and carbon fiber components for late-model Mustangs. Their extensive manufacturing experience allows them to construct everything from hoods, trunk lids, front and rear spoilers, side skirts/splitters and much more. Anderson Composites’ precision and attention to detail is a science of its own and their craftsmanship is simply unmatched.

Hurry up and purchase this Anderson Composites AC-RL15FDMU-AR Carbon Fiber Type-AR Rear Diffuser for your 2015, 2016 or 2017 Premium Model EcoBoost or GT Mustang from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Installation Videos

Video Transcript

Bill: I'm here with Alex and his 2015 Mustang GT. Now you might recognize this car. We've done some videos in the past, including the Anderson deck lid panel we recently installed. Well today, we're going to add some more carbon fiber by installing this custom rear valance. Now tell us why you chose this particular piece.

Alex: Well, Bill, I chose this piece to add a little bit more of an aggressive look to the rear and to complement the carbon fiber trunk panel-

Bill: Gotta finish off that carbon fiber look, so to speak.

Alex: That's correct.

Bill: This panel will be a direct replacement for the factory panel on your premium Mustang. It does require a little bit of cutting, but we're going to show you that in the installation.

Like of of Anderson's pieces, this is made of real carbon fiber with a high gloss finish, so it will be a direct replacement for the factory rear valance on your 2015 through 2017 premium Mustang with the plastic two piece rear bumper. This is going to add a much more aggressive look to the back with the added diffusers, plus it has larger splitters on the side and it actually frames the exhaust opening for a custom look.

For this installation, you'll need a lift or a jack and jack stands, 1/4" ratchet, 7 mm socket, 10 mm socket, a short extension, 7 mm wrench, panel remover tool, flat head screwdriver, small knife, marker, air saw or cutting tool Dremel, and safety glasses.

The installation is going to require us to remove the rear bumper, so start up here in the trunk by taking the taillights off. To do that, this rear panel comes out first. To remove this panel, we're going to remove these four finger screws here. One on the top, one bottom. Okay, so we're going to pull out and up on the panel.

We're now removing the taillights. We're going to pop this clip off here. That will allow us more access down here to the plugs and the screws. We'll start by unplugging the taillight. Start with these two here. Now you can push the harness through and carefully remove the taillight.

Okay, the taillights' are out. Now we're going to move underneath the car. Under the car, we're going to start in the middle by removing these two screws. Now on both sides, remove these two clips. Now we're going to move to the wheel wells. There's hardware we have to remove to get the sides of the bumper cover off. We're going to start by removing these two pushpins here for a little more access. With the splash shield back, there's going to be two screws. Ours is actually missing one. There should be one here and then one up top. And the last screw is right here at the top. Now we'll repeat the process on the other side.

Now we're going to take the bumper itself off, and this is definitely a two man job. Have someone grab the other side. All that's holding it on is clips, so you'll start in the wheel well and just pull the bumper out and the clips will all pop. You want to just pull up just a little bit so you can reach the wiring harness right here. Disconnect and remove the bumper.

Now you want to put the bumper up on a table. Put something soft underneath it so you don't damage the paint. We have to remove the support inside here along with the wiring, lighting, and this before we can work on removing the rear valance. Start with the reverse light. Unplug the markers and slide these clips off. Same with the tag lights. Now we're going to want to separate these little pushpin clips. Separate the support from the bumper. The bumpers support is held on by these little clips. I like to use a knife to get in there and kind of separate them. Once you get one, the rest usually come out pretty easily. If they get stuck, though, just use a little knife. Put that aside.

With that off, now we're going to remove our reverse light. These will usually be 7 millimeter screws. Now we can work on separating the valance from the bumper. There's going to be six of these screws, three on each side. The only thing holding our valance on now are going to be these little clips. Basically what you do is sort of push against it and push down. Now you can use a knife if you have to, but a lot of times you can do these by hand. Now remove the factory valance.

From our valance here, we're going to need the reflectors and these metal clips. The reflector, actually there should be a little nut in there. Once you push that off, squeeze these, and you can pull it out. These, just use flathead screwdriver to push the clip up, then slide them off.

Now to the cutting, which isn't really that big of a deal. This piece here has to go away. What we're going to do is right where this curve is, we're basically just going to cut right through the center of the curve. And don't worry about being dead accurate. It really doesn't matter as long as this bottom section goes away.

We're going to install the reflectors first. They are side specific. Make sure you get the correct side. Put them in place and install the hardware on the back. We're going to install six of these J-clips on here. Now you saw we did have to grind those down a little bit. You may or may not have to. Going to make sure these seat so it clips in place and the hole is in the center.

We're ready to install our valance to our bumper now that everything's modified and ready to go. Now what's going to happen, these metal tabs, they go in the holes where the factory plastic clips were, then you're going to bend the tabs to hold it in place. An extra set of hands will come in handy here because you've got to line everything up as you install it.

Now what we're going to do is install the six factory screws on the sides here and kind of get everything lined up before bending the tabs. We just installed our reverse light here. The factory hardware will not work. All you get are some tabs from Anderson, so you need some nuts and bolts. Just put it on there and then tighten it down. Now we're going to bend the tabs to attach our valance to our bumper. What you want to do is sort of push down on it, and then you're going to bend them over.

All right, now we're going to reinstall our bumper support. The factory clips are still there that we will want onto. Line it up and pop it in place. Okay, now we're going to start reconnecting everything, so plugging in the ... We'll start with our license plate lights here. And then it's ready to go on the car.

All right. now we're going to grab the bumper with the newly attached valance and put it back on the car. Just be careful. It is going to go over your exhaust tips now. Make sure before you put it in you plug everything back in. Now back in the wheel well, we're going to start with the upper screw here. Now there's another two screws in here, one in here, one in here. Make sure this black plastic piece is behind the bumper if you have to, just flip it around.

Now we're reinstall the pushpins we took out earlier. All right, now down here in the edges under the wheel wells. We're going to reinstall our pushpins we took out earlier. Now underneath the car, there's a factory bracket that goes here that kind of sits underneath this. It doesn't do much for support because you can't actually attach it like you would the original, so we remove that. There's also two other pieces over here on the sides. If you want to drill holes in the carbon fiber, you can use the factory bracket, but as it is in our case it's pretty tight, so we're going to leave it alone.

We'll reinstall the nuts, and don't forget to plug the light in. Now we put this back into place, and reinstall the pushpin. Do the same thing with the driver's side. The taillights are in. Now we can replace the rear trunk panel. Double check that everything is tight and your installation is finished.

Our Anderson Composites carbon fiber diffuser is installed. Installation wasn't too bad. It is a bid time consuming, but not that hard to do. What do you think? Is that the look you were going for?

Alex: I love the look. It adds a nice aggressive look to the rear and it complements the carbon fiber trunk panel, and-

Bill: Think maybe a little spoiler in the future might finish off the look?

Alex: Maybe a little GT-350 spoiler from them will complete the look.

Bill: Installation, like I said, it is a bit time consuming. I'd say give yourself about three hours, maybe four hours tops. You'll be back on the road in no time.

Vehicle Fitment

This product will fit the following Mustang years:

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