Shimano
EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300

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$31⁹⁹

orig: $39⁹⁹ save 20%

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Shimano Di2 Frame Junction Box

All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount
Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/

UPC

192790597195

MPN

IEWJC304

Tree Fort ID:

333222448303

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