SM-JC40 Di2 External Frame Junction Box 4-Port X-Large Upper Stack Height: 8

Upper Stack Height: 8

NO LONGER includes necessary Float Fluid with kit

6000 series alloy cups and materials

and Deore XT BR-M8020 brake calipers

CXR - 2013

SM-JC40 Di2 External Frame Junction Box 4-Port X-Large Upper Stack Height: 8Shimano 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 Mounts underneath the bottom bracket