Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Wheel Skewers & Frame Axles multi-density foam and a thin

multi-density foam and a thin top-layer of gel for added vibration damping and support

rust-resistant cable

Manufacturer Part Number: 16247

Manufacturer Part Number: EHBRS400AS

FX0168 RS9047

Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Wheel Skewers & Frame Axles multi-density foam and a thinShimano 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 Product Specifics Today's Stock