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Tekno 1 Rear Window Louvers; Gloss Black (15-21 Fastback)

Item 407838
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      Video Review & Installation

      Hey, guys. Adam here with Today we're taking a quick look at and installing the Tekno 1 Rear Window Louver in Gloss Black available for the 2015 and newer Fastback. You should be checking out this particular window louver if you're looking to add that retro classic muscle car styling to your S550, but with a modern spin. The window louver category for the rear windshield here is traditionally covered by window louvers that all generally have the same design. It's a more classic styling that we get from the '60s and '70s muscle cars that you can add to your newer S550. But this guy takes that styling, switches it up, and gives it a new spin. What you're getting here is two larger open panels to see out through the rear windshield, and you're getting the slotted louver design in the middle with four individual slots there broken up by a centerpiece in each one of the individual slots.Now, that alone is pretty different. Normally, these slots range the entire windshield. This is confined to a smaller, more tapered-down section of the louver. It is gonna cover a little bit of that third brake light there with openings on the side. The design here is screaming super snake. It's got that super snake look to it, it actually looks like a snake in the design itself. And it's got that trim going all the way around. So, in my opinion, one of the more modern spins again on a classic or retro style part that is traditionally dominated in the category by similar styling. So, this will stand out a little bit more. The finish is marine-grade ABS construction. So, it's flexible, it's durable, it's impact-resistant, and it's finished in a gloss black. Now, other options in the category are typically a textured black ABS. There are some other gloss black options, and even aluminum options. So, this gloss black one is great for guys who may have gloss black accents on their vehicle already, or just looking for that pop of contrast against an otherwise brighter color. It's also great for the guys with a black OEM color because it's gonna blend in a little bit more. So, depending on your particular style, this guy can either blend in or stand out.Now, the price tag for this guy is gonna be much more premium higher end than some of the other options in the category. The 3M tape pre-applied is also a step up. The 3M tape itself is gonna be a little bit thicker and more durable. And because it has pre-applied padding to the inside to prevent rattling, it's gonna be a more premium option coming in right around 600 bucks. It's got very little install process making it so much easier than some of the other options. It's not using any of the bracketing systems that you have to apply with a lot of the other ones. But that in and of itself does have the downside of it not being removable if you want it to clean underneath of it. So, it does have pros and cons like anything out there. But if you're looking for one of the more high-end options that'll stick to your glass and be a more permanent modification until you're ready to peel it off, this is gonna be a good way to go. Install is gonna be super easy, one out of three wrenches on our difficulty meter. You can tackle this with about 15 to 30 minutes from start to finish. It is gonna go on with 3M automotive bonding tape that is already set up and pre-applied to the back end of the louver. So, there's no prep work involved as far as the louvers go, but you are gonna have to spend time cleaning off your windshield.One of the most important parts of the process is making sure you're getting rid of all the dirt and dust which can prohibit a good bond between the glass and the 3M. If you want some added support, you can pick up some adhesion promoter, which you can then apply to the back end of that 3M tape just to give it an extra bond with the windshield if you have any concerns. This design also has some pads in between here to prevent it from rattling against the windshield. Some designs in the category have that issue where there's no padding and at highway speed, the louvers can actually rattle up against the glass. Because it has that padding pre-applied, you don't have to worry about that either. And it's already installed, again, making the install a whole lot easier. So, again, 15 to 30 minutes depending on how long you spend actually cleaning the windshield there. I'm gonna show you guys every single step of that process. We're not gonna be using adhesion promoter today, but it is optional. Let's get to it.Tools used in the install include a squirt bottle with a soap and water mixture and a clean microfiber.First step here for the install, and arguably the most important step is making sure your windshield is clean. The 3M tape pre-applied to the back of your window louvers is gonna stick to the glass here, but it's not gonna stick if there's dirt, dust, and debris where it needs to apply. You got to completely clean that. I recommend using a soap and water mixture in a squirt bottle and a clean microfiber rag. If you don't have this, an alcohol wipe will do the trick. You just want to avoid chemicals like Windex or a quick detailer that you'd use on your car. While they do appear to clean the windshield, they do leave a residue behind that can prohibit a good bond between the 3M and the glass. Soap and water and alcohol works best. So, it's a good time to just clean the entire windshield while you're at it, but you really wanna focus on the edges where that 3M is really going to apply. Going in circular motions all the way around. Hit the edges there, of course, let it dry and then we'll come back and apply the louvers. Just to quickly show you guys here on the backside, I'm gonna carefully set this down on our windshield to make sure I'm not scratching it.I basically peeled off a couple of inches of each one of the 3M tape strips and curled it over the front there so we can access it from the outside. What that's gonna allow you to do is the 3M that's exposed will stick through the glass but not be too sticky, so you can make adjustments if you need to. And then easily with this extra strip peeled off, peel off the rest of the 3M tape backing and put pressure all around. So, that's what we're doing next. All right. So, you can use that third brake light up top to help one this guy up and the edges of the glass as well. Come over to both sides. This looks like it's in a really good spot, so I'm just gonna start peeling off the 3M. And as I do, I'm gonna put pressure on the back of it. All right. Do that for each one of the strips. All right. Remember you also have two strips in the middle there, should peel those as well. Stick those down. All right. From there, put pressure evenly all around the edges and you're good to go.That's gonna wrap up my review and install for the Tekno 1 Rear Window Louver in the Gloss Black finish, fitting all 2015 and newer Fastback Mustangs. You can get yours right here at

      Product Information

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


      • Gorgeous Tekno 1 Design
      • Boasts a Marine-Grade ABS Plastic Construction
      • Installation Is Quick and Easy
      • Limited Lifetime Structural Warranty
      • Limited 1-Year Paint Warranty
      • Made in the USA
      • Fits All 2015-2021 Ford Mustang Fastback Models


      Impressive Rear Window Louvers. Freshen up the overall appearance of your Fastback Mustang with a Tekno 1 Rear Window Louver. Boasting a bold design this Rear Window Louver will instantly grab people’s attention. Additionally, they’re made in such a way to help maximize your vehicle’s gorgeous look without obstructing your rear view visibility.

      Durable Construction. The Tekno 1 is made from a durable marine-grade ABS plastic, so it’ll remain in good condition even when it’s constantly exposed to the elements. What’s more, it’s sun-resistant and capable of keeping your car’s interior temperature stable, improving your driving experience as a result.

      Simple Installation. This Rear Window Louver comes pre-installed with genuine 3M brand OEM grade VHB tape. As a result, the installation is quick and easy task. Just clean, peal and stick.

      Two Warranties. The Tekno 1 Rear Window Louver is backed by a Limited Lifetime Structural Warranty and a Limited 1-Year warranty on their paint, hydrodip, and/or other coatings.

      Application. This Tekno 1 Rear Window Louver fits all 2015-2021 Ford Mustang Fastback models.


      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Window Louver
      • (1) Glass Cleaner
      • (1) Wax
      • Microfiber Cloths

      Customer Reviews (17)

        Questions & Answers

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