Junction Box Shimano EW-JC304 4-Port SD300 Di2

Junction Box Shimano EW-JC304 4-Port SD300 Di2

The Shimano EW-JC304 is a compact 4-port junction unit designed for Di2 electronic shifting systems, enabling clean and efficient connection between multiple components. This internal junction helps distribute both signal and power across the system for reliable performance.

It is fully compatible with EW-SD300 electric wires and is optimized for modern 12-speed Di2 systems. With four ports available, it allows flexible wiring configurations and a tidy internal setup inside the bike frame.

Built with Shimano’s trusted quality, the EW-JC304 ensures stable and secure connections, which are essential for precise and smooth electronic shifting. It is an ideal solution for expanding or optimizing your Di2 wiring layout.

• Model: EW-JC304
• Type: 4-port junction
• SD300 ports: 4
• SD300 connectors: 0
• Master unit: no
• Installation: internal

The Shimano EW-JC304 provides a clean and reliable wiring solution, ensuring optimal Di2 system performance.