Shimano EW-JC304 Di2 Junction for E-Tube System (2nd Gen.) - 4 Ports

Shimano SD300 Introduced with the Shimano EP800 series, the SD300 E-Tube components form the interface between compatible STePS parts and expand the functional range of future Di2 systems. Shimano Di2 / E-Tube junction for the connection of 4 EW-SD300 wires. Fixing by plug connection.