Trekk Seat Collar

Easily mount a rack to any bike using this lightweight aluminum adapter. It adds two M5 rear threaded eyelets to the seatpost, providing a practical solution for bike rack installation.

Using this seat collar adapter is a breeze. First, find the seatpost of your bike. Then, attach the adapter to it. Once it's securely in place, you can mount your rack using the two M5 rear threaded eyelets. When using, make sure the adapter is tightly fixed to avoid any wobbling. For maintenance, periodically check the tightness of the screws and clean the adapter with a soft cloth to keep it in good condition.