Shimano SM-EW90-B Junction Kit for Dura Ace 5 ports
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Junction kit for Shimano's Di2. This junction kit connects the STIs and the time trial switches to the optional EW-SD50 wire kit. For external installation. Not compatible with Flight Deck.
This junction kit is equipped with connectors for ST-9071, SW-9071, SW_R671 or SW-R600. One additional port is used to connect to the optional EW-SD50 wire kit, which then connects the battery-pack, front and rear derailleur.
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