Since the advent of Shimano's electric Di2 groupsets, we've been waiting for an easy way to hide the battery, and with the FSA SL-K Di2 seatpost, that's taken care of.
By including a bonded in adaptor for Shimano's internal Di2 battery, FSA has saved you the hassle of having to run modified setups in the pursuit of the cleanest possible bike. The unidirectional carbon post is the same that's been found on the SL-K lineup for a while now, so saying it's proven is an understatement. Same goes for the alloy micro-adjust head, which makes it possible to get a perfect saddle setup, without compromises. Now you can have your perfect shifting, and the clean lines you've been missing too.
Unidirectional carbon fiber shaft
Aluminum micro-adjust head
Di2 internal battery compatible (battery and cables not included)
Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.