If you’re looking to upgrade your ride with a Shimano Di2 drivetrain, then you’ll need some junctions to connect your components. The Shimano EW-JC304 SD300 4-Ports Junction is designed to connect four EW-SD300 E-Tube wires to each other.
- 4-Port junction for your wires
- Designed for EW-SD300 wires
- Number of ports: 4 ports