SHIMANO Di2 RS910 Junction-A - 2-Port - Handlebar Port FBPost or fitness shoes

or fitness shoes

Bottom Bracket:  SRAM PowerSpline

puncture protection

Unique style

Pad replacement set available for F-19 armrests

SHIMANO Di2 RS910 Junction-A - 2-Port - Handlebar Port FBPost or fitness shoesShimano 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