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Shimano SM-EW90-B Di2 Junction A Box E-Tube 5 Port

Shimano SM-EW90-B Di2 Junction A Box E-Tube 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, Four for shifter connections. Ideally suited time trial bikes
  • 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

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Shimano SM-EW90-B Di2 Junction A Box E-Tube 5 Port