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. FEATURES Internal mounting for Shimano Di2 battery Multiple seatpost design Vector shaped integrated seatposts D-Fuse shaped integrated seatposts D-Fuse seatposts Propel Advanced SL integrated seatposts
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