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Comma Four Mirror Mount

MontanaLightning

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Just wanted to share an update on my Comma Four install. I was not happy with the standard mounting options because they rely on 3M adhesive tape. I have ceramic tint on the windshield and the idea of risking that tint, or dealing with adhesive creep in the summer heat, was a non-starter for me.

My goal was to achieve that "FitcamX" factory-integrated look. I wanted it tucked right up to the mirror housing with a minimal footprint and zero vibration.

I spent the last few days iterating on a mechanical, non-destructive mount that ties directly into the factory mirror base. It sits exactly where I wanted it, tucked into the mirror housing area and out of the primary line of sight.

I am currently refining the design to get it perfect. I have a few ideas to slim down the geometry even more where possible to keep the profile as tight as possible against the mirror, all while ensuring the mount stays rock solid and rattle free over rough roads.

I attached a few photos of the prototype on the truck and I am pretty happy with the fitment so far.

Ford F-150 Lightning Comma Four Mirror Mount PXL_20260503_020554513


Ford F-150 Lightning Comma Four Mirror Mount PXL_20260503_020528794
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sstevetx

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Looks good. I look forward to your development on this, because I'll likely go the Comma route once my free Bluecruise expires.

I have ceramic tint on my windshield as well. I have a Viofo A229 dashcam and I attached it a static cling inspection sticker holder (below). Surprisingly, it has lasted for 2 years now without issues in the Texas heat. I put it to the right of my rearview mirror, so it is not blocking my view.

Static Cling Inspection Sticker Holder - https://www.amazon.com/dp/B09QGGK75K
 
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MontanaLightning

MontanaLightning

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Factory auto dimming mirror - 492 grams
FitcamX - 113 grams
Comma Four - 167 grams
 

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maranos

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Bumping an older thread but I just gotta give a shoutout to @MontanaLightning ... The quality and just overall perfect shape and size of this thing. Absolute 10 out of 10. If you have a comma I really can't recommend this mount enough. I had nothing but trouble with the VHB tape with mine. Stuck to the glass fine, but the actual printed plastic kept coming off over and over and over. A problem I never have to think about again.

Not a great picture, I'll try to get another later.

Ford F-150 Lightning Comma Four Mirror Mount IMG_1442
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