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Gio's Outdoors

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port

$37.00 USD
$37.00 USD $37.00 USD
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Shimano Di2 Frame Junction Box
  • 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/
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