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- SH-RX910 Development Story
- Gravel racing is a celebration of endurance, grit, and the open road's endless possibilities.
- 09/10/2025
Ask any gravel rider or racer what they want from a groupset, and the answer is simple: it needs to work, no matter what. Riders demand shifting that’s fast, precise, and reliable, even after hours of rattling across rough roads and rugged trails. A gravel derailleur must hold the chain securely, shrug off impacts, and keep running even after a tumble.
The all-new SHIMANO GRX RX827 12-speed rear derailleur delivers exactly that. Purpose-built for gravel, it introduces fully wireless Di2 functionality and 12-speed HYPERGLIDE+ shifting for smooth, precise, lightning-fast gear changes. Every element of the design is engineered to thrive in the harshest conditions, ride after ride, season after season.