SHIMANO 2 PORT JUNCTION EW JC302 SD300 PORT X 2

Price: $25.68
(as of Jun 25, 2025 07:38:03 UTC – Details)

Di2 Frame Junction BoxFeatures-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..com/
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