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

}SRAM DUB Crank Arm Bolt Kit - M18/M30 Self-Extracting For SRAM/Truvativ Lunar

10 pedal thread inserts for right crank arm

} Extruded and CNC machined aluminum body

SRAM locking grips with black clamps remain secure while providing comfort and grip for everyday rides

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