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

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

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/

Part Numbers

UPC MPN Store SKU
689228827462 ISMJC41 210000056127