Shimano Shimano EW-JC302 Di2 E-Tube Junction Box
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Details
Shimano EW-JC302 Di2 E-Tube Junction Box
Connects via SD-300 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
Number of Ports: 2
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