Shimano GRX Di2 RD-RX827 SGS Rear Derailleur | 12-speed

Shimano GRX RX827 Di2 Rear Derailleur – Wireless Precision Built for Gravel Challenges

The Shimano GRX RX827 is the first fully wireless GRX derailleur designed for 1x12-speed gravel systems. It’s engineered to conquer the toughest terrain—from rocky mountain paths to muddy gravel roads. Its robust construction, advanced impact recovery technology, and integrated battery protection ensure confident riding, while wireless Di2 shifting delivers precise and lightning-fast performance. The GRX RX827 is the next-generation choice for those upgrading their gravel bike.

Features:

• Wireless operation: precise and fast shifting without cables – compatible with all SHIMANO 12-speed Di2 controllers (GRX, DURA-ACE, ULTEGRA, 105 Di2, XTR, DEORE XT)
• Compatibility: for 1x12 systems with 10–51T MICRO SPLINE cassettes and 40T / 42T chainrings
• SHIMANO SHADOW RD design: low-profile shape with angled front to avoid snagging on obstacles
• Automatic impact recovery: derailleur returns to original position after impact – you might not even notice it happened
• Ultra-durable construction: wide linkage, strong cage, tough pulleys – resists dirt and ensures long service life
• Chain stabilization: dual-spring tension system enhances chain retention and wrap
• Protected battery: integrated into derailleur body, easily removable for charging, but secure even on the roughest trails
• Status indicator: LED light displays system status
• Range per full charge: 700–1000 km depending on riding conditions
• Note: compatible with RX825 Di2 shifters, RX820 chainrings, and Shimano XT 10–51T cassettes – no special frame requirements