Shimano Junction Di2 (A) SM-EW90-B Master Lock Dual reflectors provide extra visibility

Dual reflectors provide extra visibility

The PowerTruss sole design improves stiffness without adding significant weight

The surface is covered with a special pattern that keeps your feet on the pedal

GITevo chamois with gel core that absorbs shock steadily and gradually for comfort on long rides

Best of all

Shimano Junction Di2 (A) SM-EW90-B Master Lock Dual reflectors provide extra visibilityDescription SHIMANO's SM EW90 B 5 port Junction A mounts neatly to the bike stem and connects with E TUBE wires from DI2 shifters, accessory shifters, and the downtube junction wire. The SM EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch. MODEL NO SM EW90 B SERIES DURA ACE 9070 Series Average weight 13 Type External type Position Under stem Compatible system E TUBE Compatible electric wire