Shimano SM-JC40 Di2 External Frame Junction Box 4-Port CheckoutSpec= 29/27.5 model aero wedgepack dx mount

model aero wedgepack dx mount fixer f25 size small capacity 31 cu in (0

Perfectly matched with the Charger damper ultra-low friction SKF wiper seals and Maxima Plush Fluid Zeb Ultimate not only looks the part but performs no matter the ride or conditions

A single-ply

Handlebar: Alloy

2mm Sky Blue

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port CheckoutSpec= 29/27.5 model aero wedgepack dx mountShimano 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