Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Model Name-Tail Lux 5 56mm total offset on

5 56mm total offset on 29") Gray

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

180 degrees of visibility

twist resistant street crank Tubular heat-treated 4130 crmo arms & crmo axle

Compression and midvalve circuit offer increased support and control

Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port Model Name-Tail Lux 5 56mm total offset onShimano 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