SHIMANO DI2 SM-EW90-A JUNCTION BOX A

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Expand your secondary shift options with the Shimano Di2 SM-EW90 Junction Box. The junction box mounts directly below the handlebar, making wiring up a set of secondary shifters easy and making it all possible with minimal cabling. Available in a 3 or 5 port version, the SM-EW90 is the gateway to the ultimate Di2 expansion.

 

FEATURES:

  • Expands Di2 systems to accomodate secondary shift buttons
  • 3 or 5 port version
  • Acts as a charging port for Shimano's internal SM-BTR2 Di2 battery (not included).