The Enve Seatpost Battery Retention Plug provides an ...
elegant way to achieve cleaner aesthetics on a bike utilizing an electronic group set. Designed to fit perfectly with Enve seat posts, this option makes good use of space while maintaining amazing ...
The Ritchey Di2 Seatpost battery mount securely mounts ...
a Di2 battery inside a round seatpost (Di2 battery not included). Compatible with all Shimano Di2 batteries including 12-speed (BT-DN110 & BT-DN300).