Shimano RD-RX820 GRX 12-Speed Double 36T Rear Derailleur

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Shimano RD-RX820 GRX 12-Speed Double 36T Rear Derailleur

Designed specifically for mixed-terrain riding, the Shimano RD-RX820 GRX 12-speed rear derailleur delivers exceptional chain stability and precise shifting when you need it most. Whether you are tackling gravel climbs, navigating bumpy descents, or switching between tarmac and dirt, this derailleur keeps your drivetrain composed and responsive. The GRX 810-series component combines rugged durability with smooth, reliable performance, making it an ideal upgrade for adventure and endurance cyclists who demand consistent gear changes in challenging conditions.

- Shadow RD+ technology with a stabilising clutch reduces chain slap and keeps the drivetrain quiet and secure on rough surfaces

- Compatible with 12-speed double chainsets up to 36T, offering a wide gear range for varied terrain

- Slim, low-profile design helps protect the derailleur from trail debris and accidental impact

- Optimised for Shimano GRX 12-speed shifters and cassettes, ensuring seamless integration with existing groupsets

- Durable sealed bearings and tough construction provide long-lasting performance even in wet or muddy environments

- Smooth, light shifting action thanks to a redesigned link geometry and improved pulley efficiency

This rear derailleur is engineered to handle everything from long gravel grinders to spirited cross-country rides, giving you the confidence to push further off the beaten track.

GTIN: 4550170303617