What is your seatpost? Section measurements to choose your Garmin Varia mount

Two bikes with the same name don't always have the same seatpost. Brands change the profile from one year to the next, between frame versions, or even between sizes, and it's hard to see the difference from the outside. Since each Pedra mount is designed for the exact profile of a seatpost, a difference of a couple of millimeters is enough for it not to fit properly.

That's why we publish here the section for each seatpost we have a mount for, measured by us on the actual seatpost. Before buying, measure yours and compare it with the table.

How to measure your seatpost

1. Use a caliper (vernier caliper). A tape measure is not precise enough.
2. Measure at the height where the mount will go, just below the seatpost clamp. For the Garmin Varia mounts you will need about 10 cm of free seatpost to be able to install it correctly.
3. Width: from side to side, the narrowest measurement of the profile.
4. Length: from front to back, the longest measurement of the profile.

The measurements in the table are indicative and may vary ±1 mm between units and depending on where it is measured. If your two measurements match those of your model within that margin, the mount is for your seatpost. If they don't match, or your bike doesn't appear, write to us at info@pedra.bike with your measurements and a photo of the seatpost: it might fit another model on the list or we can design it for you.

Measurement table

Last updated: October 22, 2026. 18 of 56 seatposts measured; we are completing the rest and updating this table.

"Pending" means that we have not yet published the measurement for that seatpost, not that there is no mount. If you need it sooner, ask us.

Is your seatpost round? Then you only need to measure the diameter, which is usually engraved on the seatpost itself (27.2, 30.9, or 31.6 mm).