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Details
Shimano E-Tube EW90 Di2 Junction A Box
The Shimano SM-EW90 junction box connects via EW-SD50 wires to different points on your bicycle. Also used with Shimano SM-BCR2 battery charger to charge the SM-BTR2 without removing internal battery.
3-port design - one for downtube wire to bottom bracket junction, two for shifter connection
5-port design - one for downtube wire to bottom bracket junction, 4 for shifter connection allowing the addition of TT shifters.
Battery level indicator feature
E-tube EW-SD50 wires not included
Additional charging point when using internal battery
Gear index setup switch to allow fine tuning via shifter buttons
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