Shimano Grx Rx820 12-Speed Rear Derailleur Black, Gs, 12-Speed

Enhanced chain security and quieter, more stable shifting for gravel riding

• High-performance 12-speed GRX RD-RX822-GS rear derailleur engineered with durable, lightweight aluminum and steel components for optimal strength and reliability on off-road and gravel adventures.
• Advanced Shadow Plus design with an integrated chain stabilizer and ON/OFF switch enhances chain security, reduces chain slap, and ensures smooth, precise shifting across rugged terrains and mixed surfaces.
• Compatible with MTB and road groups, this rear derailleur features a versatile 10-45T cassette capacity, medium cage, and durable direct mount system, making it ideal for gravel bikes, adventure riding, and cyclocross applications.
• Innovative technology includes a replaceable GS/SGS cage optimized for large cogs, an integrated chain stabilizer for quieter operation, and compatibility with HG 12-speed chains, providing a seamless upgrade for your 12-speed drivetrain.
• Sleek and functional style combined with optimized mounting and adjustment features make this derailleur perfect for riders seeking durability, versatility, and high-performance shifting on varied cycling terrain.