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.
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
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