SHIMANO Di2 RS910 Junction-A - 2-Port - Handlebar Port salsapromo as well as added durability

as well as added durability

while directional siping on each knob make traction in the roots and rocks

Extra-large cleat target for easier engagement

Race inspired low profile design

SHIMANO Di2 RS910 Junction-A - 2-Port - Handlebar Port salsapromo as well as added durabilityShimano 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