Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=J2645 Cage Lock feature simplifies wheel

Cage Lock feature simplifies wheel removal and chain installation

5 Color Matt Black Primary Color Black Wheel Diameter 26

}Cane Creek 110 ZS56/30 Conversion Lower Headset Black

Travel theme with a passport look faux blue leather on top with travel stamped sides

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=J2645 Cage Lock feature simplifies wheelShimano 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 tubeproject. shimano. com