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F3 Cycling
FormMount Stem Computer Mount

3.5 out of 5 stars
4 Reviews



Why We Like the FormMount Stem Computer Mount

It can be tough to find a good mount for our GPS. That's why F3 Cycling created the FormMount Stem Computer Mount. It's a secure and stable modular mounting system for GPS computers, lights, and cameras, and it's ideal for everything from racing to training and recreational riding. The FormMount's direct stem integration features adjustable arms that provide the ability to fit nearly any four-bolt stem in five various mounting positions, and it's compatible with Garmin, Wahoo, Hammerhead Karoo, and Sigma Sport.


  • A modular mounting system for GPS computers, cameras, and lights
  • Adjustable arms give the ability to fit nearly any four-bolt stem
  • Five different mounting positions offer a bit of variety
  • Compatible with some leading brands like Garmin and Wahoo
  • Garmin and Wahoo inserts included
  • FormMount Light + Camera Cradle attachment not included
  • Item #FTC0003
Garmin, Wahoo, Sigma
Claimed Weight
0.9oz (25g)
Manufacturer Warranty

Overall Rating

3.5 based on 4 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 2 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

August 23, 2021

Worth the time to install

This is one frustrating stem mount to install if you don’t watch the YouTube video first. I tried for about 20 minutes at first and gave up. Watched the install video and went back for a 5 min install. Amazing once on bike. Works great. Looks great. Peace

user image
Sergio R

Originally reviewed on

5 out of 5 stars

July 25, 2021

It's worth the installation woes

I've put it through the wringer

The other reviews are not wrong - installation can be frustrating. Learn from us and use the Bridgetool from the start. Once it's installed, though, it's all angels, sunshine, and rainbows. It's a rock solid mount for your head unit plus a great bottom mount option for a light or GoPro. Note: You can't adjust the angle of the mount. Whatever the angle of your stem, that's where your Wahoo will point. Something to keep in mind if your stem is +17deg and you're aero-conscious. Not a concern for me personally, as my spare tire is a bigger source of drag. Get it, follow the instructions, use the Bridgetool, and you'll love it.

Nikolaus H

Originally reviewed on

3 out of 5 stars

May 15, 2021

Tricky Installation

I returned this product before using it

Watched the YouTube instructional video and used the Bridgetool. Unfortunately when I tightened the stem bolts to spec the clamp arms still moved a bit so it?s a little off center. Took me about 30 minutes to install. I travel with my bike a lot using a bike bag. Having to re-install this mount every time I take my handlebars off is just not worth it for me. Still looking for an outfront mount solution for my Enve bar with Salsa stem setup...

David G
1 out of 5 stars

March 26, 2021

Impossible to install level

I've used it once or twice and have initial impressions

Needed a stem mount since my GRX in-line brake levers took all the handlebar space, it has great adjustability, but plan to waste hours trying to get it level, even with the bridge device clamped down. It drove my OCD crazy, I removed it, there are better cheaper options out there.

Jeffrey F

Originally reviewed on