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MMD Downforce Aluminum Rear Spoiler (10-14 All)

Item 393044
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Market Price $579.99 You Save 14% ($80.00)
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$499.99 (each)

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      Review & Installation Video

      Hey guys, Stephanie with, here with the MMD Downforce Rear Spoiler for all 2010-2014 Mustangs. In this video, we're going to talk about a few different topics when it comes to this rear spoiler. We're gonna talk about the materials and construction, and the install as well. Of course, I'm gonna go into more detail later on here, but I can tell you right now that this rear spoiler is going to be a two-out-of-three wrenches on the difficulty meter because you will need to drill for the install. The MMD Downforce Rear Spoiler is going to be a good option for those S197 owners out there that are looking for one of the most aggressive spoilers that's available. This isn't really for someone looking to make a subtle statement. This spoiler is different and most certainly flashy, and so it's gonna be one of the most dramatic that you can currently buy. I consider this spoiler a statement piece. It isn't subtle and it is gonna make a big difference in the looks department. If it's not the tallest, then it's certainly one of the tallest spoilers that you can get your hands on at this point in time. MMD designed this spoiler to be very much race-inspired, and you can see how that comes across. This sits on top of the deck lid, and you have your supports here on the back that are gonna give it a different style around the rear of the car. So, I said that this spoiler was tall, but it's gonna sit about 4 1/2" off of your deck lid. You can see that the spoiler has this notched-out section right here, and MMD did that to give you a little bit more visibility because, like I said, this is an aggressive spoiler that's quite tall. The notched-out portion gives you a little area to view over, since you are gonna notice this thing on the back of your car in your rearview mirror. As far as material, this spoiler's a little bit different in this category as well. This is made from billet aluminum, and it's finished in satin black. Now, this is paintable if you do decide to paint it, but I will say that the black finish does help to give the spoiler more of that race-inspired styling, in my opinion. And, since it is billet aluminum, it's both lightweight and highly durable. You're gonna get everything you need to complete the install with the spoiler, including a plug for the deck lid, aluminum mounts with rubber pads, and the spoiler will come with a template that will show you where to drill. As far as price, this spoiler costs right about the $500 mark. Like I said earlier, it's made from a different material, it is an AVS, and you won't have to have it prepped and painted itself in order for it to look good, so I'm not surprised that it costs more than other spoiler options out there.So the install here is not overly difficult but, since you're looking at having to drill, it's obviously gonna be a little bit harder than installing a spoiler that just requires some brand tape. You can always have a body shop install this for you but, if you're looking doing this yourself, an extra set of hands is a good idea. When you go to drill, just use the template and take your time. Gonna call this a two-out-of-three wrenches on the difficulty meter due to the drilling, and the install will take about two hours. Your deck lid liner will need to come off for the install, as well as the factory spoiler, but that just requires a few fasteners. The third brake light comes out with a few screws, and then you mock up your new spoiler. You loosely install the spoiler with the four standard mounting points, and then align the template. You wanna tape the template down so it doesn't move, and then remove the spoiler so you can start your drilling. You only need to drill one hole. You plug the hole in the deck lid, and then you install the spoiler with the provided hardware.Wrapping things up here, the MMD Downforce Spoiler is an aggressive rear spoiler that's billet aluminum, and comes in a black satin finish. It installs using mostly the factory rear-wing bolt holes, with an added drilled hole. You can check this thing out more online for yourself and, for all things Mustang, keep it right here at

      Product Information

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


      • Race Inspired Styling
      • Improved Downforce
      • Notched Design for Maximum Rear Visibility
      • Billet Aluminum Construction
      • Satin Black Finish
      • Bolt-On Installation
      • Fits 2010-2014 Mustangs


      Race Inspired Styling. If you love that iconic race car styling and want a taste of it for your own Mustang, add this MMD Downforce Rear Spoiler to your 2010-2014 Pony. The high quality billet aluminum construction and satin black finish bring a unique visual appeal to the rear of your S197. Once installed, this Rear Wing will sit approximately 4-1/2" off your decklid. The center notch of this Downforce Spoiler maintains maximum rear visibility for the driver, offering a styling enhancement that won't affect your safety.

      Quality Construction. Manufactured from high strength stamped billet aluminum, this MMD Downforce Rear Spoiler features CNC milled aluminum pedestal mounts complete with rubber pedestal pads. The black satin finish and stainless connection points deliver a stealthy and menacing appearance upgrade crafted to last for years to come.

      Bolt-On Installation. Complete with all the hardware necessary for the install, this Downforce Rear Wing by MMD will require some drilling. The package includes a drilling template as well as a deck lid plug, which will be used to cover the rear camera hole. With this rear spoiler installed, the factory equipped rear camera will no longer be functional.

      Application. This MMD Downforce Rear Spoiler is specifically designed for 2010-2014 Mustangs, including V6, GT, BOSS and GT500 models.

      Please note: California Special GT or GT Premium owners will find that the holes left from the factory spoiler won't not line up perfectly for installation of this MMD Downforce Spoiler.

      Modern Muscle Design

      Fitment: 2010 2011 2012 2013 2014 Details

      MPN# 393044

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (60)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 60 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • March 29, 2020

        5 2014 GT - Spirit2014 Installation Time: Less than 1 Hour

        MMD downforce spoiler

        The MMD down force spoiler is a great addition to your Mustang! It makes the car look aggressive and stylish!

        Helpful (0)
      • January 14, 2020

        5 2011 GT - CeejR Installation Time: Less than 1 Hour

        MMD Aluminum Downforce Wing

        Very aggressive and race inspired looking wing. Installation took less than an hour, was a bit of a pain as the stock wing had very strong glue that was holding it onto the car. When we took it off, it ruined some of the paint on the trunk, but besides that it was a very nice and clean part for the Stang.

        Helpful (0)
      • January 13, 2020

        5 2012 GT - brion Installation Time: Afternoon


        This wing is definitely not for the subtle look. It also gives plenty of downforce at high speeds. The installation is pain if you already have a wing. The wing I had already stock used 8 holes not 4. The remaining 4 had to be covered up. The holes are 8mm in diameter and I used some countersunk washers and bolts. You also need to take your time and remove the adhesive from the previous wing. I used alcohol and a plastic squeegee.

        Helpful (1)
      • November 03, 2019

        5 2014 GT - ShelbyG Installation Time: Afternoon

        Good spoiler

        I had the california special spoiler on before this one and decided to go with it because it looks better in my opinion. Taking the spoiler off was kind of a pain due to some nuts not coming out like they should and took about 2 hours. But the install was extremely easy. I didn't drill the 5th hole because i was running out of time I'll probably do it later down the road. But overall fitment was fine and I'm really loving the look of it. Way more aggresive than the california special spoiler

        Helpful (1)
      • October 29, 2019

        1 2014 GT - Mustanggtcs1971

        No hardware

        Awesome spoiler but I can’t mount it I didn’t get any hardware with the spoiler.not happy

        Helpful (0)
      • October 29, 2019

        4 2010 GT - Danny226 Installation Time: Afternoon

        Just what I was looking for

        Product was great came with everything fit and finish is spot of still has great visibility out my back window.

        Helpful (2)
      • October 20, 2019

        5 2013 GT - RichardR Installation Time: Less than 1 Hour

        MMD Rear wing

        I love this rear wing on my S197. Looks very good and as far as I know its the closest to a NASCAR inspired wing as I could find. one word of advice when installing this is to not open the trunk fully because if you drop a bolt while threading it into the wing you will have to go fishing. It would also be cool if they came in different finishes.

        Helpful (1)
      • October 07, 2019

        5 2015 V6 - Bamaman78 Installation Time: Less than 1 Hour


        Item was easy to install and looks great. Very pleased!

        Helpful (0)
      • September 03, 2019

        5 2013 GT - AsunteW Installation Time: Afternoon

        Mmd spoiler

        The most annoying part is removing the adhesive left from the stock spoiler. Couldn’t get it all so im gonna take it to a detailer. But COMPLETELY changed the look of my car. I love it

        Helpful (1)
      • September 02, 2019

        5 2013 GT - GaryP Installation Time: Less than 1 Hour

        Awesome Wing

        Aggressive great looking wing, way better than you can tell by the pictures. Super easy install once you can get the factory wing off (double sided tape under the entire thing for some reason). Between the Eibach suspension and this wing (only visual changes) my sleeper looks more like a track car now. Even after 7 years people still stop me in traffic to make comments.

        Helpful (1)

      Questions & Answers (30 answers)

      5 Top Rated Questions

      I read up a question about 05’ to 09’ mustangs in regards to fitment with the factory pre-drilled holes with the stock trunk. I’m about to, however, put on a carbon fiber trunk on my 06’ mustang with none. If I drill my own holes in my new trunk, can this spoiler be put on without dimension issues?

      • The MMD Downforce Aluminum Rear Spoiler will work fine as long as the truck is to factory specs and the holes are drilled properly.

      Helpful (3)

      Will I need to drill extra holes in my 2013 BOSS 302 for this spoiler? Thanks!

      • This will line up with the factory Boss 302 spoiler holes.

      Helpful (1)

      What do you do if you have a back up cam this wont fit ????

      I have the california special wing on already. Will i need to drill more holes and plug the old ones up or will i only need to drill one more hole to fit this spoiler?

      I have a 2013 GT Premium with the spoiler. If I plug the extra holes with something that isn't color matched to my car will you be able to see it with the MMD spoiler on it?

      • Yes, factory spoiler holes will be visible when this is installed.

      Helpful (0)
      10 More Questions
      Is this spoiler the same height as the California special spoiler? Or a little bit taller? I'm trying to see if there's any difference looking out of the rearview mirror 1 answer
      does this spoiler weight more than the stock spoiler on the v6 2012? 1 answer
      I have a 2013 GT Premium. I'm reading that the spoiler will fit my car, but I may need to drill extra holes and plug the factory holes, correct? What is the best way to plug those holes? 1 answer
      I have 2013 mustang gt, Do you think it will fit perfectly? Or do I need to drill? 1 answer
      Fitment Guide says this will fit my GT but at the end of the description it says it will not fit the Premium trim package. So am I correct in guessing this will not fit my GT as it has the Premium trim. And if it does not fit with the Premium trim, can you make a suggestion for something similar cause this is the only spoiler I have wanted since I got my car? 1 answer
      I have the small factory spoiler will I only have to drill the one hole for the middle stud? 1 answer
      Can this fit on my 2000 gt trunk if holes are drilled properly? 1 answer
      My car doesn't have a rear view camera or a big spoiler. However it does have a small spoiler will this leave any holes showing? 1 answer
      Do you know if I can put this spoiler in my 05 gt ? Hole alignement, dimension...? Thank's 1 answer
      How off is the alignment for GT Premium models? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Downforce Rear Spoiler
      • (1) Decklid Plug
      • Drilling Template
      • Installation Hardware

      Tech Specs

      Will It Fit My Mustang

      • Boss 302 - 12, 13
      • GT - 10, 11, 12, 13, 14
      • GT500 - 10, 11, 12, 13, 14
      • V6 - 10, 11, 12, 13, 14