Shimano GRX Di2 RD-RX815 11-Speed Rear Derailleur

The Shimano GRX RD-RX815 rear derailleur brings the precision of Shimano Di2 electronic shifting to your 11-speed drivetrain. Engineered for mixed terrain, it ensures smooth and accurate gear changes, enhancing your ride experience on gravel, trails, or roads.

Chain Stabilizer for Quiet Rides: Integrated with a chain stabilizer mechanism, the RD-RX815 minimizes chain slap and provides a quieter, more secure ride. For smoother surfaces, the On/Off switch lets you disable the stabilizer, adapting effortlessly to your riding environment.

Optimized for Gravel and Adventure: Designed specifically for gravel and adventure riding, the derailleur is compatible with road cassettes featuring a maximum 34T low sprocket, providing a wide gear range for tackling varied terrain with confidence.

Durable and Versatile Performance: Built with robust materials and Shimano's proven engineering, the RD-RX815 delivers reliable performance in challenging conditions. Its rugged design ensures it can handle rough trails while maintaining top-notch functionality.

The RD-RX815 supports Shimano's synchronized shifting technology, allowing seamless communication between front and rear derailleurs for optimal gear selection.

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.