The Shimano SD300 Di2 Electric Wire is compatible with Shimano Di2 E-Tube drivetrain systems and is intended for use with internally routed frame setups.
Features:
More compact design makes new electric components smaller and lighter
Will potentially expand the future capabilities of DI2 systems
For internal routing usage (wire holder included)
Shimano Part Number: EW-SD300-I
Compatible System: Shimano E-TUBE system
Product Data
Time Trial: Yes
Road: Yes