Shimano EW-JC304 SD300 4-Ports Junction

The Shimano EW-JC304 SD300 4-Port Junction is a vital component for enhancing your electronic shifting system. Designed to connect up to four EW-SD300 E-Tube wires, it ensures seamless integration for Shimano Di2 and STEPS systems.

Compact and Lightweight Design: With its small and lightweight profile, the EW-JC304 is easy to conceal within your bike’s frame, maintaining a clean and aerodynamic look. Its compact design makes it ideal for modern internal cable routing setups.

Advanced Compatibility: Updated to work with Shimano’s new SD300 E-Tube wires, this junction box is fully compatible with Shimano’s latest electronic shifting and motor systems. It supports a wide range of configurations for both road and MTB applications.

Durable and Reliable Connections: Built to withstand various riding conditions, the EW-JC304 ensures secure and water-resistant connections. Its robust design guarantees reliable performance, no matter the terrain or weather.

Designed for internal routing, the EW-JC304 minimizes cable clutter and optimizes the aesthetics of your bike.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.