Shimano Dura-Ace Di2 SM-EW90-B 5-Port Time Trial Junction A

Shimano SM-EW90-B 5 port Junction A for Dura Ace and Ultegra Di2 enables connection of time trial switches. This junction has a charging port to allow charging of an internal battery (charger not included), and mounts below stem using the supplied mounting strap.

Features
. Compatible with ST-9071, SW-9071, SW_R671 or SW-R600
. For external installation
. Not compatible with Flight Deck