NEW Shimano EW-JC302 Di2 Junction Box - 2 Ports, Use With EW-SD300 type_wheels-wheelsets ISO Diameter: 584 / 650b

ISO Diameter: 584 / 650b / 27

steep terrain

which is critical in technical shoes

and instantly returns back to its position for a seamless experience for the rider

NEW Shimano EW-JC302 Di2 Junction Box - 2 Ports, Use With EW-SD300 type_wheels-wheelsets ISO Diameter: 584 / 650bShimano 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