• Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Junction Box Shimano
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Shimano

Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port SKU: CY6762

$39.99 USD
$47.68 USD $39.99 USD
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Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port. 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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