SHIMANO SM-EW90-A Di2 Cockpit Junction A Box 3-Port Under Stem Mount

SHIMANO SM-EW90-A Di2 Cockpit Junction A Box 3-Port Under Stem Mount.

The junction box mounts neatly to the bike stem and connects with E-TUBE wires from DI2 shifters and the downtube junction wire. The SM-EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch.

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