Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Model Name-Tail Lux if so equipped) or B-pivot

if so equipped) or B-pivot knuckle with a thickness of 7

Brake Lever Clamp 22

Outfitted with Terry's Urban chamois it's ideal for rides of 1-2 hours

Compression and midvalve circuit offer increased support and control

180 degrees of visibility

Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Model Name-Tail Lux if so equipped) or B-pivotShimano 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 tubeproject. shimano. com