Shimano EW-JC200 Junction (2 port) E-Tube Wire Connector. Shimano Di2 Frame Junction BoxFrame Junction Box connects via SD50 E-tube wires to four different points: front derailleur rear derailleur cockpit junction box and battery mountAll Di2 components on
Shimano EW-JC200 Junction (2 port) E-Tube Wire Connector. Shimano Di2 Frame Junction Box
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