Shimano EW-SD300-I Di2 E-Tube Electric Wire 750mm

The Shimano EW-SD300-I Di2 E-Tube Electric Wire 750mm is designed to support a tidy, reliable internal connection for your bike’s E-Tube electric system, helping keep wiring out of sight while maintaining smooth communication for motor and battery control. With its compact form and included wire holder, it’s well suited to neat installation setups where space and appearance matter, and it’s made to help future-proof your Di2-enabled build as capabilities evolve.