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Shimano Di2 Junction-B SM-JC40 for External Wire Routing

Item #CSH10653
Condition:
New — Open
Regular price

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Why We Love It
Shimano Di2 Frame Junction Box
About This Item
  • Frame Junction Box connects via SD50 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 from http://e-tubeproject.shimano.com/
  • Mounts underneath the bottom bracket shell
Specifications
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Details
Brand Shimano
Model Junction-B SM-JC40
Intended Use Mountain,Road
mpn ISMJC40
upc 689228827448
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