Shimano RS910 Di2 Drop Handlebar Internal Junction Box 2 Port w/ Charging



$99.99 Regular price $129.99
by Shimano

Shimano 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