NEW Shimano EW-RS910 Di2 Drop Handlebar/Internal Frame Junction Box - 2-Port with Charging price_changed_on_2023-01-29 Optical Gear Display tells you

Optical Gear Display tells you which gear position is selected while riding your bike

Color: Black/Reflective

Heavy duty 1/8" single speed chain great for BMX

toothy side knobs ensure your favorite gravel descent won’t unravel in the final corner

NEW Shimano EW-RS910 Di2 Drop Handlebar/Internal Frame Junction Box - 2-Port with Charging price_changed_on_2023-01-29 Optical Gear Display tells youShimano 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