Shimano Di2 SM-EW90-A E-tube Di2 Junction-A 3 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, four for shifter connection. Ideally suited for tt/triathlon with multiple shifter positions
- 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
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Shimano Di2 SM-EW90-A E-tube Di2 Junction-A 3 port
Shimano Di2 SM-EW90-A E-tube Di2 Junction-A 3 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, four for shifter connection. Ideally suited for tt/triathlon with multiple shifter positions
- 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
Original: $149.67
-65%$149.67
$52.38Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- 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, four for shifter connection. Ideally suited for tt/triathlon with multiple shifter positions
- 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











