AirTag Downtube Mount for Trek Checkpoint SL/SLR

This design adds the ability to discreetly mount an Apple Airtag to your downtube storage cover on your Gen 2 (2022-2024) Trek Checkpoint SL/SLR.

Due to the component being plastic, the Bluetooth Low Energy, NFC, and Ultra-Wideband antennas are able to transmit through the plastic and be reachable via an Apple Device. Normally, you cannot place an Airtag inside of a Carbon Fiber frame without extreme range degradation due to Carbon Fiber being electrically conductive, however this design provides a stealth mounting solution with minimal performance impact.

This mount will require a slightly longer mounting screw than the one currently on your bike. This part can be provided by your Local Trek Store or through the following McMaster Carr link (LINK). If you chose to go to your local hardware store, please ensure that the screw is a 90 Degree Countersink Screw. The full description of the screw required is in the Bill of Materials.

To install, remove your downtube cover, remove the bolt that is located where the mount will go using a 2.5mm Hex Key, then reinstall the part. The Airtag is then secured to the part via a friction fit. Insert the airtag at a slight angle, then press down until you hear a “snap”.

To remove, use a small flat head screw driver or the 2.5mm Hex Key wrench you used for installation to pop the airtag back out for battery replacements.

NOTE: This is NOT compatible with any previous Gen 1 Checkpoint ALR/SL, or Gen 2 Checkpoint ALR. This mount will not work with any other Trek bicycle that is equipped with a downtube storage cover.

If you are interested in a downtube storage mount for your other Trek bicycles, check out my other Makerworld models, or shoot me a comment/message requesting me to make a mount for your specific bike.