The SHIMANO SM-EW90-B 5-port junction is carefully mounted on the bike handlebar stem and is connected to the E-TUBE cables of the DI2 gearshift controls and accessory gearshift controls and to the down tube junction cable. The SM-EW90 junction box is equipped with an integrated battery charge level indicator, a charging port and a ratio indexing switch.

• Sales model code: SM-EW90.
• Shimano article number: Small parts.
• Cycling discipline: E-Bike / Di2 / E-tube.