Shimano EW-AD305 Conversion Adapter for EW-SD50 and EW-SD300

The Shimano EW-AD305 adapter enables a smooth connection between EW-SD50 and EW-SD300 E-Tube wires, ensuring compatibility across Shimano Di2 systems. It bridges the gap between older and newer electronic shift components.

Compact and Lightweight Design: Built with precision, the EW-AD305 maintains a minimal and lightweight profile, making it easy to integrate into your Di2 setup without adding unnecessary bulk.

Reliable Connection: Shimano’s high-quality construction ensures a secure and stable connection for consistent performance. Whether you're upgrading or maintaining your electronic drivetrain, this adapter delivers seamless operation.

Future-Proof Your System: Designed for Shimano's evolving Di2 technology, the EW-AD305 allows riders to mix components from different E-Tube generations, extending the life and versatility of their drivetrain.

Whether you’re transitioning to newer components or need to connect EW-SD50 and EW-SD300 wires, the EW-AD305 conversion adapter simplifies the process, ensuring your electronic system runs flawlessly.

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.