The F3 Cycling FormMount is a neat, secure mount for popular bike computers from the likes of Garmin and Wahoo, and it can be adapted to carry a phone and a GoPro.
Fitting the FormMount to a stem with a four-bolt faceplate is pretty straightforward in most cases: you remove either the top two bolts or the bottom two bolts, slide longer bolts (which come as part of the package) through the FormMount's arms, add little CNC machined spacers to them and then tighten into place on your stem. The bolts serve a dual purpose: holding your stem's faceplate in place and fixing the FormMount in position.
You get to choose from several different FormMount positions. As mentioned, you can fix it to either the top bolts or the bottom bolts of your stem. The arms are kinked towards the end and can rotate relative to the computer mount section, allowing you to position that mount either higher or lower than the bolts.
Using the top bolts, you can also run the arms rearward so that your computer sits just above your stem.
Finally, you get 15mm of fore/aft adjustment. You loosen three 2mm hex bolts, move the arms to whichever of the 13 internal notches you want to use, and tighten them up again. It's a simple job.
If the position still isn't right for you, shorter arms are available for £10. These will take computers up to the size of a Wahoo Bolt (small computers will work with long arms, but large computers won't work with short arms).
One other choice you get is between Garmin and Wahoo inserts; both come in the pack. Swapping between them is another simple job with a 2mm hex key (compatibility with other leading brands is in development, according to F3).
The FormMount will fit most four-bolt stems where the distance between the centre of the bolts is anywhere from 16mm to 41mm. The stem bolts must run parallel to one another (most do).
Sod's Law, the FormMount didn't fit the first stem I tried it on. It uses M5 bolts and anything larger won't go through the arms.
The second stem, though: easy peasy, and it has been the same for a load more stems that I've tried since.
I've been using the FormMount mostly with a Wahoo Elemnt Bolt, the computer locking in place securely and remaining stable and readable over all kinds of road surfaces. I had no issues with the computer vibrating and becoming illegible. If that does happen with heavier devices fitted (a larger computer and a GoPro, for example) a BridgeTool is available to brace the arms and provide extra stability.
I've used the FormMount with various other devices, including Garmin's large Edge 1030 GPS. Position it to sit flush with your stem and you can access the lower buttons just fine.
One potential drawback of the FormMount is that you don't get angle adjustment like you do with a mount that clamps around a round handlebar, such as the K-Edge Garmin Race Mount we reviewed. It will always sit at the same angle as your stem bolts, so if you have a riser stem the FormMount will continue upwards at the same angle, and if you have a negative rise stem (yuck! I hate that term) it will slope downwards. You can't do anything about that (F3 says that a FormMount with a tilt function is in the works), which might or might not be an issue for you. Chances are that if you're a roadie you have a flattish stem anyway.
On the plus side, this design frees up space on your handlebar, positions your computer centrally and, personally, I think it's a neat solution, making use of what's already there to reduce clutter. At 25g it weighs the same as Wahoo's out-front mount that clamps to your handlebar, although you need to add two x 2g to take account of the longer stem bolts that you have to use. Negligible!
Various accessories are available for the FormMount, including a Phone Component (£35) that allows you to attach your mobile on top, and a Camera/Light Component (£15) that lets you fix a GoPro, for example, to the bottom. I've already mentioned that you can get shorter arms (£10).
One other accessory is a coloured plate to run through the middle of the FormMount (£5.50) to replace the standard black and match your bike. That's a custom option too far for me!
You might have got an out-front mount in the pack with your computer and an unbranded replacement is just a few quid, but if you want one from Garmin it'll cost you £29.99, while something like the K-Edge Garmin Race Mount I mentioned earlier is £54.99. In that sort of company, the FormMount pricing seems fine, particularly as it's both super-tidy and modular.
Overall, the FormMount is a really good design that'll hold various computers securely while keeping the front end of your bike free of clutter. It's a cool bit of kit.
Secure and tidy stem-fixed mount for Garmin and Wahoo GPS computers
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road.cc test report
Make and model: F3 Cycling FormMount modular mounting system
Size tested: n/a
Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
F3 describes the FormMount as "a modular mounting system for GPS computers, phones, cameras and lights".
It says, "The marvel of FormMount's direct stem integration is the ability to fit virtually any 4 bolt stem in multiple mounting positions. Carbon filled polymeric materials provide stiffness, strength and light weight. Overmoulded CNC stainless steel inserts provide a secure stem connection. FormMount is the embodiment of a form follows function philosophy."
Tell us some more about the technical aspects of the product?
F3 lists these features:
- 360 degree rotating arms offer 5 mounting positions.
- 13 fore/aft settings puts computer in exact position of rider preference. Plus, it's available in 2 arm lengths.
- Mounts directly into virtually any 4 bolt stem.
- Accenting colours available in orange, yellow, white, red, green blue and gray.
- Supports Garmin, Wahoo and Sigma Sport. Other leading brands in development.
- Transforms into a phone mount with add on component.
- Camera and light integration with add on component.
It's strong and has a solid feel. Some people might prefer a CNC aluminium construction, I guess.
It does what it's supposed to do... very well.
It's tougher than it looks. It's hidden under your computer in use so it's unlikely to get damaged.
It's about the same weight as a standard out-front mount that you get from a computer manufacturer like Garmin or Wahoo.
You don't have to pay this much if you just want a mount for your computer, but it's a very neat little gizmo.
Tell us how the product performed overall when used for its designed purpose
Very well. No complaints at all from me.
Tell us what you particularly liked about the product
Tidy solution, easy to install.
Tell us what you particularly disliked about the product
Nothing springs to mind.
How does the price compare to that of similar products in the market, including ones recently tested on road.cc?
You can buy a replacement out-front mount for just a few pounds, Wahoo's own is £16.99, one from Garmin is £29.99 and the K-Edge Garmin Race Mount that we reviewed last year is £54.99. The FormMount is a smart modular design so it's a little different.
Did you enjoy using the product? Yes
Would you consider buying the product? Yes
Would you recommend the product to a friend? Yes
Use this box to explain your overall score
This is a really good product that does exactly what it's supposed to do. It's a clear 8 overall.
About the tester
I usually ride: My best bike is:
I've been riding for: Over 20 years I ride: Most days I would class myself as: Expert
I regularly do the following types of riding: commuting, club rides, sportives, general fitness riding
Mat has been in cycling media since 1996, on titles including BikeRadar, Total Bike, Total Mountain Bike, What Mountain Bike and Mountain Biking UK, and he has been editor of 220 Triathlon and Cycling Plus. Mat has been road.cc technical editor for over a decade, testing bikes, fettling the latest kit, and trying out the most up-to-the-minute clothing. We send him off around the world to get all the news from launches and shows too. He has won his category in Ironman UK 70.3 and finished on the podium in both marathons he has run. Mat is a Cambridge graduate who did a post-grad in magazine journalism, and he is a winner of the Cycling Media Award for Specialist Online Writer. Now pushing 50, he's riding road and gravel bikes most days for fun and fitness rather than training for competitions.