$$499.95In stockCatalog \ TEKNO 1TEKNO1S550-RAWGB
2015-23 Mustang S550 Tekno 1 Rear Window Louvers / Valance
Proudly made in USA with 100% USA sourced materials Derived from digitally scanned cad data for unmatched precision fit/quality Ready to install out of the box in a gloss black finish Optional painted GLASSSKINZ® come in all OEM factory paint codes plus satin black and matte black Marine grade abs is warp /fade resistant/UV stable and ...
Glassskinz542015-23 Mustang S550 Tekno 1 Rear Window Louver /

2015-23 Mustang S550 Tekno 1 Rear Window Louvers / Valance

free shippingUSA

Gloss Black ABS
Gloss Black ABS
Satin Black SB | Cost of paint +$350.00
Matte Flat Black MB | Cost of paint +$350.00
Grabber Blue, AE | Cost of paint +$350.00
Need For Green AJ | Cost of paint +$350.00
Atlas Blue B3 | Cost of paint +$400.00
Dark Highland Green BJ | Cost of paint +$350.00
Twisted Orange CA | Cost of paint +$400.00
Code Orange CN | Cost of paint +$400.00
Competition Orange CY | Cost of paint +$400.00
Rapid Red | Cost of paint +$425.00
Avalanche White DR | Cost of paint +$350.00
Velocity Blue E7 | Cost of paint +$400.00
Brittany Blue EB | Cost of paint +$400.00
Grab Lime F9 | Cost of paint +$350.00
Eruption Green FA | Cost of paint +$400.00
Perfect Blue FM | Cost of paint +$350.00
Shadow Black, G1 | Cost of paint +$350.00
Triple Yellow H3 | Cost of paint +$400.00
Gaurd HN | Cost of paint +$350.00
Antimatter Blue HX | Cost of paint +$350.00
Dark Matter Gray HY | Cost of paint +$350.00
Deep Blue J4 | Cost of paint +$350.00
Magnetic J7 | Cost of paint +$350.00
Iconic Silver Metallic JS | Cost of paint +$400.00
LD FT Grey JX | Cost of paint +$350.00
Kona Blue K6 | Cost of paint +$350.00
Vapor Blue KT | Cost of paint +$350.00
Carbonized Gray Metallic M7 | Cost of paint +$350.00
White N4 | Cost of paint +$350.00
Light. Blue N6 | Cost of paint +$350.00
Orange Fury N7 | Cost of paint +$400.00
Fighter Jet Gray NE | Cost of paint +$400.00
Mischievous Purple P2 | Cost of paint +$400.00
Race Red PQ | Cost of paint +$400.00
Royal Crimson R3 | Cost of paint +$400.00
Ruby Red RR | Cost of paint +$400.00
Black Gloss UA | Cost of paint +$350.00
White Plat. UG | Cost of paint +$400.00
Ingot Silver UX | Cost of paint +$350.00
Oxford White, YZ | Cost of paint +$350.00

Item #: 1TEKNO1S550-RAWGB


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CALIFORNIA WARNING: Cancer and Reproductive Harm www.p65warnings.ca.gov
  • Proudly made in USA with 100% USA sourced materials
  • Derived from digitally scanned cad data for unmatched precision fit/quality
  • Ready to install out of the box in a gloss black finish
  • Optional painted GLASSSKINZ® come in all OEM factory paint codes plus satin black and matte black
  • Marine grade abs is warp /fade resistant/UV stable and can be buffed out to remove minor scratches/spider webbing
  • Genuine USA made 3M panel bond tape pre installed and pre tabbed for fast install (adhesion promoter 94 included)
  • Tested to NHTSA standards to not obstruct rearward vision
  • GLASSSKINZ® patented designs add dramatic head turning styling
  • Reduces interior fade/cuts down glare at night/does not rattle/no wind noise
  • Limited lifetime structural warranty / 6 month limited paint warranty
  • GLASSSKINZ® protected under six us patents. USA made quality
  • Tekno 1 Patent : US D825,419S

The entire concept behind Glassskinz® started with drawings of unique concepts of S550 Mustang Window Louvers! The offerings on the market were so boring. The same old design applied to new body styles since the 60's! Mustang Rear Window Louvers were in desperate need of a makeover! This led to our first design for the Mustang Window Louvers with our Tekno 1 open port design, a first of its kind. Two open ports, left and right with a center waterfall,  allowed complete visibility with no obstruction. The center waterfall is real low profile unlike current designs on the market that looks plain mean!  It too was designed to ensure no rear view obstruction. We met a lot of push back from Mustang Window Louvers lovers at first but then it caught on as we featured this first design at SEMA in 2016.  Following we created 3 more designs and have a couple more waiting in the wings for introduction. This Glassskinz® design Mustang Rear Window Louver is so unique we received Patent D825,419S on it as a rear mustang window valance not just a louver!

CALIFORNIA WARNING: Cancer and Reproductive Harm
Return Policy

Customer ReturnsAnchor

You may return a Glassskinz® that is non painted within 7 days of receiving your order and receive a refund of your costs as long as the merchandise is in fully resalable condition (no damage, no scratches, no wear and tear). EXCLUDES ALL Custom Painted Parts. Custom painted items have a no return policy. Please email [email protected] for an RMA (return merchandise authorization number).
All returns must have its original packaging with freight prepaid and insured. All returns will be assessed the industry standard 10%-35% restocking fee. Returns must be made within 5 days of "Return Authorization" date. Any returns must be noted with a full description on the front of the manifest or bill of lading in order to be recognized as valid along with RMA number written on the box. Reminder: Prior to any returns, customer must contact [email protected] OR 1-833-SKINZZZ

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Country of Origin
Mfg. Warranty
Limited Lifetime Structural/Limited 6-month Paint


Do GLASSSKINZ® obstruct visibility?
No. We are the only rear window valence to have passed the NHTSA rear view visibility testing. From the outside it gives the illusion that it cannot be seen through, however, from inside the cabin it is designed to essentially vanish. Please click on documents to see full test with numerous photos. Also check out reviews of current owners! in our testimonials and reviews sections.

How do GLASSSKINZ®Install?
The GLASSSKINZ®adhere to your rear glass with Genuine USA Made 3M brand OEM grade VHB tape . Rated -20 degrees to 200 degrees Fahrenheit . The tape is pre installed and pre tabbed for quick installation. Primer 94 ampules are provided for more secure bond.

How do I clean the glass?
GLASSSKINZ® are designed not to be removed ,however, still allow you to clean the viewed through glass. Cleaning under the louvers is done with a glass cleaning arm or microfiber cloth and 20/20 glass cleaner. There is enough room for most people to fit their hand or a wand under the louver openings. Spot free water can also be used to clean the glass. Water flows out through the bottom of the louver.

GLASSSKINZ® offers a limited lifetime warranty on the part for defects in workmanship or material. 6 Month on paint. Paint Warranty: Clients that select the Extended Paint Warranty and have a claim will result in a $100 dollar reimbursement along with a free of charge re installation kit.
About Part


GLASSSKINZ® is more than just window louvers. It is an evolutionary «Rear Window Valance» as defined by the U.S. patent office. Derived from digitally scanned CAD data for precise fit and maximum rearward vision. GLASSSKINZ® has a very sleek lean profile from the side with an aggressive visual from behind. All our unique designs are asymmetrical and offer clear rearward vision with no obstruction. Glassskinz® is unlike the standard decades old louver designs which have substantial visibility limitations. (Click for NHTSA report)

GLASSSKINZ® are made of a durable high quality, made in USA, sun resistant, temperature stable, marine grade ABS with Acrylic cap. GLASSSKINZ® have a long-lasting no fade finish, are warp resistant, and do not MELT! in high temperatures like other offerings on the market. The GLASSSKINZ® parts will come out of the box READY TO INSTALL NO PAINT REQUIRED with a GLOSS BLACK UV stable finish which is ALSO a ready to paint surface, PRE PAINTED by us in OEM colors, or a variety of other custom finishes like matte black and satin black. Genuine USA made 3m panel bond tape is pre-installed and tabbed for easy fast installation. Personalize your GLASSSKINZ® with a wrap, custom paint, stripes, camo …the sky is the limit! GLASSSKINZ® unsurpassed quality speaks for itself. PROUDLY MADE IN USA! PROTECTED UNDER 5 USA patents with more that are pending.

Patents Page

Customer Reviews
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Top Reviews
Outstanding Design, Quality and Service
by John H on June 06, 2022

I had been reviewing several rear window louver/valence units from the major big name aftermarket players, like CJ Pony, American Muscle and Amazon. I even ordered a IKON V2 and it arrived and was basically very poorly made, very thin in thickness of material and poor finish. Just a box and a clear sheet cover. Sent it back. Came across GlassSkinz. Called and was connected to the owner who spent about 30 minutes on the phone answering my questions and concerns Great guy. So I took a chance and ordered a Techno 1 S550 in Raw Gloss Black. Unit arrived and was a massive upgrade in fitment, finish, quality and even the shipping container. Wrapped in 1/8" poly foam, then sheet wrapped in clear plastic sealed. Heavy Duty shipping blocks in the slots. Marine Grade ABS, not the the thin "paper-plate" stuff from IKON. Finish was top notch. This product is worth EVERY dime over anything else I looked at and even ordered and sent back. 3M tape was pre-applied and cut. Adhesive accelerator pens were included. Plus a ton of marketing material. Overall you simply get what you pay for. And this product is worth more than what I paid. Is it more expensive than IKON? Yes. Is it worth it? YES, every dime. The Raw Gloss Black looks outstanding on my 2020 California Special Mustang GT in Shadow Black body color. I had Ford Performance apply the GT-350 Factory Upgrade prior to taking delivery to the intake system which is the manifold up, new throttle body, intake system and a crate of parts. This also came with the Ford Performance limited edition side rear quarter window scoops you see which are not full sized to make the rear quarter glass look like a pillar, and the window scoops have matching Ford Honeycombs inside the pocket that match the GT-CS body scoops and hood inserts, Roush racing fender brackets and hydraulic hood struts, no prop rod, and LED side markers and a LED backup light. Love the way this thing accents the tail lights from the rear. Thank You GlassSkinz. If you are thinking you are spending too much, forget it, you will be amazed at the difference this product presents over others.

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Absolutely beautiful a head turner for sure
by Stacey G on June 11, 2023
Verified Purchase

This adds a very unique and sharp look to my Roush. I felt the back needed something extra and this piece definitely draws the eye!

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Get What You Pay For
by Kerry S on July 02, 2023
Verified Purchase

This louver adds class to the vehicle without masking the vehicle. The craftsmanship of the part and the paint are first rate. It is as advertised.

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Hot stuff!
by Ryan Z on July 30, 2023
Verified Purchase

Good quality, no damage and sticks great!

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A new day is dawning in automotive styling led by Dare 2B Different!® Enterprises Inc. We all know the only constant in this world is change. Both evolutionary and revolutionary change bring about new things that often amaze us. GLASSSKINZ® is Dare 2B Different!® Enterprises Inc. latest design introduction . We have thrived upon these principals since 2004 developing unique niche market products with OEM or better quality.

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