Shimano EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300 Cannondale Tools 153389-Q0-L

153389-Q0-L

124527-Q0-L

- Can be flipped to provide left or right hand bottle access

127572-Q0-L

UPC: 821973351315

Shimano EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300 Cannondale Tools 153389-Q0-LShimano 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 Product Specifics Today's Stock