Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=K4922 It’s a simple and stylish

It’s a simple and stylish addition to any bike

} Extruded and CNC machined aluminum body

Cane Creek and other shock brands may require conversion clip

5mm Crankset Material Carbon Chainline 45mm Speed 12 Crank Spindle Diameter 28

2Travel (mm) 175Cable Routing WirelessAdjustment InfiniteMax Height 418

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=K4922 It’s a simple and stylishShimano SM JC40 Di2 External Frame Junction Box 4 Port. 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