Allows internal seatpost mounting of Shimano Di2 internal battery on bicycles fitted with; integrated seatposts (Vector shape), integrated seatposts (D-Fuse shape), D-Fuse seatposts, and Propel Advanced SL integrated seatposts.
Internal mounting for Shimano Di2 battery
Multiple seatpost design
Vector shaped integrated seatposts
D-Fuse shaped integrated seatposts
Propel Advanced SL integrated seatposts
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