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and avid riders seeking advanced technology and innovative features
each part is designed to maximize efficiency and longevity
Constructed from high-grade three-layer webbing
especially with modern wide tires
Shimano EW-JC304 Di2 Junction Box with 4 Ports for E-Tube Electronics Brand_Delta and avid riders seeking advancedShimano 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
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