Continental GP5000 Tyre & Tube Bundle

Shimano EW-JC304 SD300 Di2 4 Port Junction

• Shimano Di2 4-port junction

• Enables connection of multiple Di2 components using EW-SD300 wires

• Compact design for internal frame routing

• Secure, water-resistant E-Tube connectors

• Ideal for clean, integrated Di2 installations

• E-Tube cables sold separately

The Shimano EW-JC304 Di2 4-Port Junction is an essential component for riders building or maintaining a Shimano Di2 electronic shifting system. Designed specifically for EW-SD300 E-Tube wiring, this compact junction allows multiple Di2 components to be securely connected within the bike frame for a clean, professional installation.

Ideal for modern road, gravel and performance bikes, the EW-JC304 is engineered to sit neatly inside frame tubing, keeping wiring protected and out of sight. Shimano's reliable, water-resistant connectors ensure consistent performance in all weather conditions.

Technical Specifications:

• Type: 4-Port Junction

• Compatibility: Shimano EW-SD300 E-Tube wires

• Mounting: Internal (within frame tubing)

• Designed for: Linking multiple SD-300 Di2 components

• Model Number: EW-JC304

Perfect for Di2 upgrades or replacements, the Shimano EW-JC304 ensures a tidy setup and dependable electronic shifting performance, exactly what you'd expect from Shimano engineering.