Talk to a Mustang Expert
1-888-332-7930
Mon-Sun 8:30 AM - 11:00 PM EST

Free Shipping On Orders Over $49. Details

Roush Rear Side Splitters (13-14 All)

Market Price $99.99 You Save 4% ($4.00)
Our Price

$95.99 (pair)

FREE Shipping
  • Item 69128
  • MPN# 421405

In Stock Ships same business day. Choose options to add to cart

Features, Videos & Details

  • 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

Review & Installation Video

Hey, what's going on, guys? Justin with AmericanMuscle.com 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.

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.

Fitment: 2013 2014 Details

What's in the Box
  • (1) Driver side Rear Splitter
  • (1) Passenger side Rear Splitter
  • Hardware
Installation Info
Tech Specs
Will it fit my Mustang?
  • Boss 302 - 13
  • V6 - 13, 14
  • GT - 13, 14
  • GT500 - 13, 14

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Cheap and easy

After installing these Roush rear Side Splitters the rear of my Mustang will never look the same easy to put on and awesome fitment

Helpful (1)

5/5
:)

love the style it gives, and super easy to install

Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 57 Reviews

Customer Photos (37) Submit Your Photo

View All 37 Photos

You Might Also Like

8 Questions / 9 Answers

Ask a Question

Will these work on a 2012 roush diffuser?

DanielW

  • These will not work with the 2012 Roush diffuser as the rear fascia on the 201-2012 models is different than what is found on the 2013-2014 models.

    KevinD92

Helpful (0)

Is there any reason that these would not work on a 2012 GT?

Anonymous

  • The 2012 GT rear bumper are shaped differently which is why these rear side splitters will not work on a 2010-2012 GT model Mustang.

    KevinD92

Helpful (0)

I have an 2014 Mustang GT with Gt500 quad tip exhaust, will the Roush rear side splitters work with that?

BobbyHill

  • Yes, these side splitters will work with quad tip exhaust. If you scroll down the page, you will find some customer submitted photos. There are a few customer car's that feature quad tips with the splitters.

    AshleyK

Helpful (0)

I plan on ordering the MMD rear valence diffuser for my stang and I also think that this might add a decent accent to it, I wouldn't think that there would be any fitment issues but I would like to ask to make sure, will it all fit together back there no problem?

Austen

  • The Roush Rear Side Splitters (13-14 All) will fit very nicely with the MMD by FOOSE Rear Valance Diffuser (13-14 GT, V6). You should have no problems with these two items.

    Ricky36

Show 1 more answer Helpful (0)

Can anyone tell me the length of these. Need them for a custom application.

71swing

  • The Roush Rear Side Splitters are 20" in length. I hope this helps!

    AMJEFF

Helpful (0)

Will these work with the small black splash guards that come stock on the GT500? I am wondering if these work in conjunction with the small black plastic splash guards that seemed to have come stock on my '14 GT500. Or if the splash guards need to be removed.

Shagy2shagy

  • Yes these will work just fine with the splash guards. Check out the customer pics section...several of the cars there have the splitters with the splash guards.

    Daxel

Show 2 more answers Helpful (0)

More Products You Might Like

Customer Reviews (57) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Less than 1 Hour

Installation Cost:0-$100

  • Fit 4.732143 4.7
  • Appearance 4.982143 5.0
  • Bang For Your Buck 4.125 4.1



  • 5/5

    Installation Time: Less than 1 Hour

    February 07, 2017

    Cheap and easy

    After installing these Roush rear Side Splitters the rear of my Mustang will never look the same easy to put on and awesome fitment

    atx5000

    Year: 2014 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Less than 1 Hour

    January 20, 2017

    Roush Splitters

    Fit great and look even better. Easy to install!!!!

    13TrackPack

    Year: 2012 Submodel: V6

    Helpful (1)

  • 4/5

    Installation Time: Less than 1 Hour

    January 19, 2017

    Roush rear side splitters

    If you already have a front splitter and a rear diffuser its a must to finish the look. Gives your stang that lowered look, as far a performance don't fell nothing different but sure looks good, would I buy it again if I had to.....I sure would

    dubbsampson

    Year: 2013 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    January 03, 2017

    :)

    love the style it gives, and super easy to install

    J1300

    Year: 2013 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Less than 1 Hour

    December 15, 2016

    Tail splitter

    Good product made out of good material hopefully last long. I haven't 08 Mustang so I had to adjust it to fit. Looks great. I recommend get the rocker arm and tell splitter together. They complement each other. Roll on Mustang drivers.

    RedHotMachine

    Year: 2008 Submodel: V6

    Helpful (1)

  • 5/5

    November 22, 2016

    Roush rear splitters

    Great item for any mustang.. fixes well. Easy to install

    BlackStang

    Year: 2014 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    November 14, 2016

    THESE FIT 10-12

    These splitters will fir 10-12 mustangs as well all you need to do it is a drill. After you drill the 4 holes just insert the clips and screws and you are good to go!

    TripleBlackGT

    Year: 2011 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    June 05, 2016

    Great Quality, Quick install

    These side splitters really give the rear a nice sportier look, combined with the side splitters and the rtr decklid, completely change the look of the car. great quality and easy install.

    Yanez

    Year: 2012 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 26, 2016

    Clean and simple

    Great fit and easy install. Completely changes the appearance of the car!! A must have product.

    04svt

    Year: 2013 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 27, 2015

    Installed on a 2011GTCS

    Although it says that is for a 13-14 mustangs, I installed this on a GTCS and it looks great, I paired them up with a Side splitter kit from Roush, GT500 splash guards, and Boss 302 front street lip. Couldn't be happier with the turnout.

    Khalid

    Year: 2011 Submodel: Other Chicago, il

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    June 21, 2013

    It really completes the look for the 2012 boss's

    I bought these to go along with the rough side splitters. They are listed as not fitting the 10-12's and rightly so. They can be made to fit with some trimming of the rear valance though. Definitely worth going through the hassle or trimming to make them fit. If your not afraid of making them fit I highly recommend them.

    Boss2511

    Year: 2012 Submodel: Boss VA BEACH

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    December 21, 2013

    Rear Side Splitters

    I have a 2012 GT Mustang and I wasn't sure that these would fit as it states these are for the 2013-2014 Stangs! So I took the chance and Boy was I glad I did! These fit Perfectly on my 2012 Mustang GT! These need to state that the fit 2012-2014 Models as I'm sure others would buy them if they stated this. Only issue that I had was the hardware to instal them - I went to Home Deport and purchased 10 Stainless screws and lock washers ($6.00) and found this MUCH easier when installing than to use the ones provided with the kit. I took my time and when these where installed - they looked TERRIFIC!!! If you own a 2011-2014 - these will fit with no issues! I hope AM reads this and changes the description as I wanted them to look good on my GT but read that these where only for the 2013-2014. Well, they are for the 2011 & 2012 as well. Only gave them a 3 Star as the cost for 2 pieces of plastic was high, but the quality was good! If these where sold as $75.00 - more would purchase. Love the look and Love AM as this was one mod I'm glad I took the chance to install!

    STANGBOSS

    Year: 2012 Submodel: GT Fleming Island, Florida

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    August 26, 2013

    Perfect for 10-12 GT500 with the matching side splitter

    I bought the Roush side splitters for my 12 GT500 last December. I just added these rear pieces after debating. I must say they match the side pieces to really complete the look, and I don't know why I didn't do it sooner. As others have described, they are very slightly off from the 13-14 fit, but hardly noticeable at all. I'm very fussy -- and they pass my test! I lined them up with clamps, scribed marks on the plastic valance underside, drilled a few holes and ditched the supplied hardware for some self tapping trim screws instead. The screws together with the supplied 3M tape are all you need to hold them tight. This mod is easily reversible. I personally think they look BETTER on the 10-12 cars with the black rockers than the 13-14 cars with color-keyed rockers. Roush missed the boat in not marketing these to the 10-12 guys. I highly recommend !!

    PXNH

    Year: 2012 Submodel: GT500 New Hampshire

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    July 01, 2013

    Definitely finishes the lower lines of the car.

    I put these on my 2013 GT/CS and they really finished out the lower lines on the car. Definitely makes it flow better when looking from front to back and sets the car apart from others with just a subtle change.

    CaptinAhab

    Year: 2013 Submodel: GT Riverside, CA, USA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 20, 2013

    Roush Side and Rear Splitters

    Installation was a success. I'm always skeptical when it comes to the dreaded drilling, but I took my time and the outcome is, well, magnificent !!! These aide my Shelby by keeping the road debris free from the sides and rear which was their intended purpose as well as the looks....

    DR4GON

    Year: 2013 Submodel: GT500 Rome, NY

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 18, 2013

    Great product

    The Splitters come with all necessary installation hardware and also a stencil to cut out and put on the car for proper drilling. Wasn't hard at all to install. Overall, very great product! Would buy again!

    Derrik

    Year: 2014 Submodel: GT Las Vegas, NV, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    October 18, 2013

    Rear splitters

    The fit and finish of this product is unparalleled, and it gives your car a real race car appearance. A side benefit is also that it will help keep debris off of your painted bumper. As far as the install equipment, take the "template" and throw it away, it is easier to use the splitter itself as a guide. If I do have any complaints, it's the price, it's a little steep for what they are, but overall a very good product from Roush.

    JohnnyC78

    Year: 2013 Submodel: GT Central IL

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    May 06, 2013

    Kind of pricey

    I added these to keep the rear quarters from getting blasted, they did require some drilling and while I am happy with them, they are a bit expensive for two pieces of plastic.

    BlackGT500

    Year: 2013 Submodel: GT500

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 02, 2013

    Looks great

    Completes the look if you have the side spliters. Easy to install.

    WIGT

    Year: 2013 Submodel: GT Wisconsin

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    April 21, 2013

    Great fit and look

    Was very easy to install, looks great would recommend paired with roush side splitters

    ElTALI

    Year: 2013 Submodel: GT Florida, USA

    Helpful (0)

Related Mustang Categories