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> Special Order Catalog > Components > Shifter > Electronic Shifter Parts, Shimano > Junction Box > Shimano JC40 Di2 External Frame Junction Box 4-Port

Shimano
JC40 Di2 External Frame Junction Box 4-Port (CY6760)

$50.49

Features and Information

CY6760
  • Mounts underneath the bottom bracket shell
  • Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/
  • Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear deailleur, 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
 

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