FREE 2 or 3-Day Delivery on 10,000+ Items. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$12k Summer Sweepstakes! Enter Daily >

Roush Rear Side Splitters (13-14 Mustang)

Item 69128
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Our Price

$149.99 (pair)

FREE Shipping Market Price $172.99 You Save 13% ($23.00)

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Video Review & Installation

      Hey, what's going on, guys? Justin with here. As you can see, I've my '14 G.T. back in the shop. I'm doing a little bit more work on it today. You guys seem to be really digging these videos, so I'm going to keep bringing them to you. If you caught the first couple of videos, you can kind of see the general direction of the car. Appearance-wise, I have that GT500 theme going on, thanks to the matte white stripes on the white car - which I think looks really cool - the GT500 spoilers, and some other little parts. Performance-wise, you saw the Cobra Jet Intake Manifold I did in the second video, along with the big monoblade throttle body, the off-road H-pipe, and the MagnaFlow exhaust. So car's running great, looking good so far, but I definitely have some more stuff planned today.I'm starting off with the chin spoiler here, the ROUSH front chin spoiler, which I just finished up installing. Really a big fan of this chin spoiler. Not a whole lot of options available out there for these generation Mustangs in terms of lip spoilers or chin spoilers. The R.T.R. is nice. It's a little too radical for what I'm going for. Boss is really nice, obviously, but price is a little high for me. So the ROUSH is just right. I like it. Simple lip, yet I think it really adds a lot to the car. So I do have some other appearance stuff going on here today, guys. In addition to some stuff inside the car finally. So let's go over to the side, and I'll show you some more appearance stuff.All right, guys. You've been hearing me talk about it for the last few videos and guess what? The nice weather is finally here, so finally been able to throw on my new wheels, and I could not be happier. I went with the '13 and '14 GT500-style wheels wrapped in the very good Mickey Thompson rubber here, and again, the 28's in charcoal. I think they look awesome on the white car, and they really just nail that GT500 look that I've been after ever since I bought this car. So my vision is finally kind of coming together, thanks to these wheels. In addition to that, guys, I also did the ROUSH side and rear splitters to go along with that front chin spoiler from ROUSH. I think the total package just really adds a lot to the car in terms of appearance, and just gives it a much more aggressive look. Now, I am going to get inside the car, of course, but I do have one more suspension part I want to tackle before I do so, so let's check that out.All right, guys. Ryan and I just finished up installing the S.R. Performance lower control arms here on my '14. Now, for a lot of Mustang owners, these are actually one of the top mods you guys do when you first get the car because as you probably know the wheel hop on these things is absolutely horrendous. I've just been dragging my feet a little bit on this mod, but now the car is making real good power, I definitely need these to help me get that power to the ground. Very simple install guide. Basically, a two-bolt install. Of course, you want to make sure you get the brake lines out of the way with a big zip tie, something like that. But again, a very recommended mod with these cars, and again, should help you lay down some nice lines instead of wheel-hopping all over the place. With these buttoned up, I'm going to get inside the car and show you guys a couple mods in there.All right, guys. So here we are in the interior of my '14 G.T. where I am doing a little bit of work today. Now, full disclosure, when I bought this car, it had to have a few options. It had to have the Track Pack, Recaros, and the car had to be white. Now, the only car I could find with those options was a base car. So I am missing out on the cool stereo, some of the nice interior touches, and those Track Apps that we all know and love. So I am trying to fix that one at a time, and I'll show you what I'm talking about. First up, I did the Raxiom Navigation. Now, this is an absolute must for anybody without the factory nav. It integrates so well into the interior of these cars, works flawlessly, and the G.P.S. is right on the money. So hands-down probably one of the best mods I've done to this car so far. As far as that boring base dash, well luckily, here the guys at AmericanMuscle Graphics do offer a few dash overlay kits, so I picked up their carbon fiber version, and I absolutely love this thing, man. Slapped it on one day in the driveway at home just in an hour or two, and it kind of gives you that California Special appearance to your dash if you have a base car like me. It just spices it up a little bit, so I really do enjoy that. Finally, I am missing those Track Apps, so I had to take care of that, and what I did was, I looked at the P.L.X. DM-100 Multi Gauge. Now, this thing has a touchscreen gauge, and it shows you all that great OBD2 info, so air-fuel ratio, intake air temp, water temp, things like that. And it can also be used as a performance gauge, so it can tell you your eighth, quarter mile times, things like that. Definitely a nice thing to grab if you don't have those Track Apps because it kind of takes the place of that, and I had a nice, stealthy install here with the gauge pod. So overall, the interior is coming together pretty nicely. A couple of other bells and whistles I threw in was the Modern Billet 6-speed white shift knob, which I just love that retro look, and I also threw in some Raxiom L.E.D. map lights as well. So overall, again, really happy with the interior. I think the car is really starting to come together. Maybe have a few other things down the road here as far as the interior is concerned, but for now, again, really happy.All right, guys. That's going to do it for this installment on my 2014. Thanks for checking out the progress. I honestly could not be happier with how the car's sitting right now. I think it's looking great, definitely making some good power. Now, it's the time to get on the streets and have a little bit of fun. So drop a comment and let me know what you think of this bad boy, and in the meantime, I'll see you next time. Peace.

      Product Information

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


      • Aggressive Race Inspired Styling
      • Thermo-Formed TPO Material
      • Features a Stippled Grain Texture
      • Easily Installs with Supplied Hardware and 3M Automotive Tape
      • Fits All 2013-2014 Mustang


      Race Inspired. Now you can add even more race inspired styling to your Mustang with a set of Roush Rear Side Valance Splitters. These are the same exact splitters found on the special edition Roush Mustangs, so now you can have the same Roush styling for your ride.

      Roush Quality. Designed with the original OEM CAD data from Ford to ensure a precise fit, these splitters are made from high pressure injection molded thermal plastic olefin (TPO) with a stippled grain texture finish for an aggressive appearance, superior durability and light weight.

      Application. This set of two Roush Rear Side Splitters are designed for use on the newly redesigned 2013-2014 Mustangs including the V6, GT, Boss and Shelby GT500 models.



      Roush 421405

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Driver side Rear Splitter
      • (1) Passenger side Rear Splitter
      • Hardware

      Tech Specs


      Customer Reviews (95)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Boss 302 - 13
        • GT - 13, 14
        • GT500 - 13, 14
        • V6 - 13, 14