Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300 MFPN=WPR1400AAQXKA07121 With its smooth octagonal shape

With its smooth octagonal shape DNA rubber compound and small flanges the Original grip is comfortable during all-day epic rides

HS-series rim brakes and Julie disc brakes: fittings sold separately

Designed to suit ISIS axles

}Easton EA70 Stem - 60mm 31

Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300 MFPN=WPR1400AAQXKA07121 With its smooth octagonal shapeShimano EW JC304 Di2 Junction Box 4 Ports Use With EW SD300. 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 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