Shimano EW-RS910 Di2 Internal Junction A Box
Designed for use as a bar-end on drop handlebars or with designated frames, the RS910 junction is a 2-port option for internal E-TUBE wire routing, charging, battery monitoring, and shift mode switching.
Specifications
Built-in type Junction-A for specific frame or handlebar end
Please check with manufacturer for compatibility
Mfr Claimed Weight
11g