3T's Battery Holder holds a Shimano Di2 seat tube battery(Shimano SM-BTR2) inside your seat post, enabling easy fitting and removal of the battery. It is compatible only with 31.6 diameter seatposts.

Bar clamp faceplate for secure mounting of 3T Eye head unit. - Alloy - For Arx II Team and Pro road stems

3T's Computer Mount Bridge allows you to set up your computer between your two aerobar extensions. - Not adjustable (works when your extensions are 80mm apart) - Extension clamp size: 22.2mm - Weight: 22 grams

Garmin Integra Mount fits 3T Integra Ltd and Integra Team stems and provides housing for Garmin GPS units. The mount, fabricated from injection-molded plastics, replaces Integra’s standard nose shroud with a Garmin twist-click mounting for seamless, aerodynamic fitting of Garmin devices. - It is compatible with Garmin devices up to 810 models.

Integra Garmin Mount fits 3T Integra Ltd and Integra Team stems and provides housing for Garmin GPS units. The mount, fabricated from injection-molded plastics, replaces Integra ’s standard nose shroud with a Garmin twist-click mounting for seamless, aerodynamic fitting of Garmin devices. - It is compatible with the Garmin 1000 model