F3 Cycling Bike Stem Computer Mount Holder Stand - Anti-Shake, Adjustable, Fits GPS (Garmin, Wahoo, Sigma, Hammerhead), Cameras and Lights

This is a very innovative mount, with a clean, simple, flexible design. However, it was extremely frustrating to try to install, even with the “bridge tool”. Final torquing threw off the arm alignments every time, even with slowly increasing the torque values across all bolts. I did watch and follow the install video, but had no luck.While having two independent arms to support the mounting cradle looks great, built into that design is a fundamental problem of keeping the arms aligned, and the mount level, as the bolts are tightened.Two other issues: The claimed weight of 25 grams does not include the mounting hardware! Actual weigh is well over 40 grams using either set of included bolts. Also, all the Amazon product pictures and the product box show sleek tapered head cap screws, yet those are not included, but are a $20 option requiring a separate order from FormMount. Ouch!In the end I returned this mount and installed the OEM Wahoo Bolt bar mount, which isn’t as neat or sexy, but takes one minute to install, and weighs an actual 25 grams.

Since the width of the faceplate on the Lynskey stem is much wider than the previous 3T ARX II stem I had, this F3 mount was the only option that works for my current setup in order to keep the Wahoo Roam out front.I've read some reviews where users have complained that the arms, once torqued down, would rotate and cause the cpu to sit slightly tilted. I didn't have that issue and it wasn't difficult to install and actually feels quite sturdy. Adjustments to fore and aft to suit where I wanted the cpu to sit is a nice plus to this mount.My takeaway and the reason I'm giving it 3 stars is because I likely received a returned item. Although there were no signs of damage to this mount, the box was semi-flattened and the actual screw needed to mount the Wahoo adapter was missing. Luckily, I still had a spare rear derailleur hangar from a previous bike and the screws on that hangar was a perfect match.

I have this mount on two bikes now (gravel and MTB). It puts the computer at a great spot for glancing at while riding and the ability to adjust length of the arms allows a nice tight mount right up against the face of the stem. Adjusting the arms to get a level mount can be a little fiddly, but once you get it locked into place this is a great mount.

I like that it is fairly versatile in terms of positioning. I installed it on my mountain bike, which is a XC race bike, so I'm leaning forward a lot more than on a normal trail or downhill bike. The only thing to complain about is, that it is a little tough to get my Garmin 520 plus on it. Don't get this wrong, it mounts fine, but it takes a bit of force to do so. On a mountain bike, this could be an upside though as it sits super snug and tight, and you have to hit the deck hard for your Garmin to come off.

Upon installation the fit was so tight with my Garmin it almost broke the mounting points on my device. Returning.