SHIMANO Di2 EW-90A 3-Port Junction Box
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Description
This junction box is the very heart of any SHIMANO Di2 Dura-Ace 9070, Ultegra 6870 and XTR drivetrain. It is through it that gear shift commands pass, and where settings are stored. It will find its place under the stem.
It is a true computer, the brain of the system and therefore an essential component: we offer it to you in case of breakage or failure so you can enjoy your drivetrain without having to buy the entire system again!
It features a battery charge indicator and three ports (standard model).
Ref: 7970330116262
Points forts
The brain of the SHIMANO Di2 system;
Positioned under the stem.
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