Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=K4922 10 pedal thread inserts for

10 pedal thread inserts for right crank arm

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

It’s a simple and stylish addition to any bike

Cane Creek and other shock brands may require conversion clip

10K Temperature Compensation and Waterproof (IPX7 waterproof to 1 meter for 30 minutes)

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=K4922 10 pedal thread inserts forShimano 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