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Shimano EW-JC304 Di2 Junction Box

Original price was: $34.00.Current price is: $27.20.

Shimano EW-JC304 Di2 Junction Box Shimano Di2 Frame Junction BoxConnects via SD-300 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box...

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Shimano EW-JC304 Di2 Junction Box

  • Shimano Di2 Frame Junction Box
  • Connects via SD-300 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount
  • 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
  • Number of Ports: 4
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