Tern GSD water bottle bike mount for Apple AirTag

I’ve recently tested an under-saddle mount. On its own, it is an easy target and it can be easily found if the thief knows where to look. To make the most out of AirTags, I also have one inside my Storm Box.

To complement the two, I am now also using this AirTag mount, which can either sit between your water bottle and the bike frame. Alternatively, if you do not have a bottle, it can sit directly on the frame secured using the bottle holder bolts.

Mounted using the “too-easy-to-spot” water bottle bolts
Let’s unzoom to put its size into perspective

Let’s play hide and seek!

Here is where the GSD comes to the rescue. It has a couple of other mounting options with the exact same distance between the bolts as the water bottle bolts.

Can you spot the AirTag?
What about now? Look between the pedal and battery.

Note the two silver bolts inside the triangle on the right hand side. They can be used for this AirTag mount.

Assembly and installation

It is super easy to install. The original Tern screws are too short. So, let’s replace them with the 2 bolts supplied with the mount. The only tool you need is a standard hex head 3 mm screwdriver bit.

On Tern GSD Generation 2, you can choose between the upper or lower position. Personally, I prefer the upper one.

Installed in the upper position
Installed in the lower position
It is not much thicker than the AirTag itself

Where can I buy one?

I am in the UK and I purchased one on eBay. Here is the link if you want to check it out and get yours.

What other mounts are available?

I’ve also tested an under-saddle mount. You can see more photos of it and read more about it here.

Comparison of the under-saddle and water bottle mounts

Published by

Jiri Brejcha

Jiri is passionate about mobility ranging from Wi-Fi to folding bikes;-) He is a Wi-Fi Technical Architect at Cisco UK and proud member of the Cisco Live Network Operations Team and WLAN Pi development team. If not working, he is most likely riding his Brompton bike.

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