Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Magnetic Tools reduces vibration and adds lateral

reduces vibration and adds lateral stability to the tire

FX2356 TL0952

- Low profile block knobs rolling efficiency and diamond texture for extra traction on slippery surfaces

Caliper height adjusting washers of various thicknesses

UPC: 763477004352

Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Magnetic Tools reduces vibration and adds lateralShimano 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