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MMD GT350 Style Upper and Lower Grille Extensions (15-17 Mustang GT)

Item 393900
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      Video Review & Installation

      Hey, guys. Stephanie with here with a review and install of the MMD GT350 STyle Upper and Lower Grille Extensions for the 2015 and newer S550 GT Mustang. In this video, we're gonna go over a few different topics with these grille extensions. We're gonna talk about the styling of these, the materials and construction, and the install as well. I'll go into more detail later, but I can tell you right now that the install for these is an easy one. It's a one out of three wrenches on the difficulty meter. The MMD GT350 Style Upper and Lower Grille Extensions are going to be something that you should check out if you're looking for a way to change the front-end appearance of the S550 GT, but you don't necessarily wanna shell out the cash for a complete new upper and lower grille setup since that can get expensive fast, or you don't wanna completely revamp your grilles. This would also be a good option for you if you're after adding some of that GT350 style to your Mustang. They're not gonna fit the 50th anniversary or the base model grilles. These grille extensions are just added to your factory grille, and MMD designed them to give a very close appearance to the GT350 grille. Now it isn't gonna look exactly the same, but you'll still get that very similar appearance. You're also changing the looks of the front-end of your car in a very simple, very easy, and also reversible way. That's the beauty of these, in my opinion. They're so simple, yet they do make a difference in looks, and you don't have to spend an arm and a leg or go with a completely after-market grille. You're getting both upper and lower grille extensions with this little kit here so that you can complete the look. These are made from ABS plastic, which is commonly used for exterior styling because it's lightweight, strong, and durable, and these are all good qualities for an item that's gonna be living on the front of your car. These are gonna come with everything you'll need to get them installed. Like I said, a big plus here is that they're very easy to install. They install with just 3M tape, that's already on the backside of the extensions so you don't even have to worry about placing it. They're also gonna come with alcohol wipes and adhesion promoter so you can make sure that you get a good bond. When it comes to price, you can expect to pay right about the $150 mark, which is less than half the price of any other grille option that you have. As far as the install, if you wanna even call it an install, it's very easy. It's a 1 out of 3 wrenches on the difficulty meter, and you can expect to spend 15 minutes to get these installed. You won't need any tools, but you are gonna wanna make sure that you have a clean surface and that you test fit the extensions before installing. And they are side specific, so just make sure that you have the correct sides ready. Once you have the grille clean, use the alcohol prep pads to prep the grille where the 3M will be. Then use the adhesion promoter after you peel the backing off the 3M tape, and allow it to dry. Then it's just a matter of firmly pressing the grille extensions onto the grille using even pressure. I would just keep in mind allowing these to set on the car before you wash it or take the car in the rain. Wrapping things up here with the MMD GT350 Style Upper and Lower Grille Extensions, these offer a fast and easy way to change up the looks of the front-end of the S550 GT without having to purchase an entirely new grille replacement. They will give your Mustang a touch of the GT350 styling. They allow you to keep the factory grilles, and you can check them out more online right here at

      Product Information

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

      Features & Specs

      • Aggressive GT350 Inspired Styling
      • Factory Style Matte Black Finish
      • Durable, Injection Molded ABS Construction
      • Super Easy Peal and Stick Installation
      • Fits 2015-2017 Three Window GT Grilles Only


      Aggressive GT350 Inspired Styling. Totally transform the exterior appearance of your 2015-2017 GT Mustang with a set of Modern Muscle Design GT350 Style grille Extensions. These MMD grille Extensions were designed to easily allow your GT's three window grille to closely mimic the aggressive styling of the Shelby GT350's grille.

      Quality Construction. These Modern Muscle Design GT350 Style grille Extensions are designed using the original OEM CAD data from Ford to ensure a perfect fit. Both the upper and lower Extensions are manufactured from an OEM quality injection molded acrylonitrile butadiene styrene (ABS). ABS is an extremely strong material known for its light-weight, superior durability and impact resistance - making it perfect to withstand the hazards of daily driven vehicles.

      Easy Peal and Stick Installation. MMD's GT350 Style grille Extensions are super easy to install and installation can be completed in less then 15 minutes. Thoroughly clean the surface and then simply peel the 3M doubled sided automotive bonding tape from the back and set firmly in place. It is that easy.

      Application. These Modern Muscle Design GT350 Style Upper and Lower grille Extensions are designed to fit all 2015-2017 GT Mustangs equipped with the factory three window style grille. These MMD Extensions will not fit 50th anniversary or base model grilles.

      Modern Muscle Design



      MMD 393900

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Left Upper Extension
      • (1) Right Upper Extension
      • (1) Left Lower Extension
      • (1) Right Lower Extension
      • (2) Alcohol Wipes
      • (2) Adhesion Promoter

      Customer Reviews (64)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • GT - 15, 16, 17

        Fits Three Window GT Grille Only, will not fit 50th anniversary or base model grilles.

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