Shimano SM-EW90-B Dura-Ace Di2 Junction B


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Shimano SM-EW90-B Dura-Ace Di2 Junction B

Shimano Di2 Junction Box

  • All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
  • Use Di2 system checker to update component firmware from
  • SM-EW90-B 5-Port Cockpit Junction Box connects up to 2 pairs of Di2 shifters to the frame junction box via 5 SD50 E-tube wires
  • OEM front wiring kit for Dura-Ace Di2 9070
  • LED battery charge level indicator
  • Rear Derailleur adjustment mode
  • Internal Battery charging port
  • Includes Junction Box Band (CY9082) and Junction Box Hook (Mounting Plate, CY9081)