Shimano GRX Di2 RD-RX827-SGS 1x12 Speed Rear Derailleur

The Shimano GRX Di2 RD-RX827 rear derailleur is engineered for riders who push deep into rough gravel and mixed terrain. Designed for 1x12-speed setups, it delivers fast, reliable electronic shifting with the strength needed for real-world riding. This is GRX performance without compromise.

Wide-Range 1x12 Compatibility: Paired with a 10–51T cassette, the RD-RX827 offers massive range for steep climbs and fast gravel sections. It supports both long adventures and race-paced efforts with equal confidence. Riders get flexibility without sacrificing shift speed.

Automatic Impact Recovery: Built-in automatic impact recovery protects the derailleur from hard trail strikes. The impact-deflecting shape helps it absorb hits and reset instantly. Even after rough encounters, shifting remains precise and consistent.

Shadow ES Stability and Durability: Shimano Shadow ES design refines chain stability with a slimmer and stronger profile. Solid pulley construction improves durability in dusty, rocky conditions. The result is quiet, controlled drivetrain performance on unpredictable surfaces.

Fully wireless Di2 shifting removes external wiring and reduces clutter. It’s designed specifically to handle the vibrations and abuse of gravel riding.

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.