Shimano Di2 SM-EW90-B E-tube Junction-A - 5 Port

- The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
- This junction A is required to connect the shifters via E-tube wires to the down tube junction wire
- 5-port design, one for down tube wire to bottom bracket junction, two for shifter connection
- 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
- Reliable and secure water resistant connectors
- Stem mounting strap included