Pebblebee Tag Universal Under-Bike-Saddle Mount

This is a compact under-saddle mount for a Pebblebee Tag Universal (an AirTag alternative), designed specifically for bicycles.

The holder is sized for the Pebblebee Tag Universal (approx. 41 × 26 × 5 mm) and keeps it securely in place. It mounts discreetly under the saddle using two M4 screws (10 mm length).

The design consists of two printed halves. The nuts are automatically captured in the upper shell, so no extra tools or hands are needed during assembly. The screws can already be partially threaded into the lower shell before mounting both halves to the saddle rails, which makes installation very easy.

The rail mounts are designed for the common ~42 mm rail spacing and ~7 mm rail diameter. They are slightly oval, allowing the mount to fit almost all standard saddle rails without stress.

Once installed, the Pebblebee tag sits securely and out of sight, protected while remaining accessible if needed. 

A simple and practical solution for hiding a bike tracker cleanly under the saddle.