Shimano GRX RD-RX820 Rear Derailleur

The Shimano GRX RD-RX820 Rear Derailleur delivers versatile and reliable shifting performance tailored for gravel and mixed-terrain riding. Compatible with 11-34t and 11-36t 12-speed cassettes, it offers a wide gear range to keep your cadence comfortable no matter the terrain. This derailleur features an integrated adjustable chain stabilizer that reduces chain slap and prevents drops, ensuring a quiet and secure ride on rough surfaces.

Equipped with Shimano’s Shadow RD+ technology, the RD-RX820 provides a distraction-free, silent drivetrain experience. The ON/OFF stabilizer switch lets you adapt to varying trail conditions for smooth, dependable shifting on both smooth and rugged terrain. Compatible with HG 12-speed chains, this derailleur combines durability and precision to enhance your cycling performance.

Key Features:

• Quiet and Secure Shifting – Adjustable chain stabilizer prevents chain slap and drops.

• Shadow RD+ Technology – Reduces noise and distractions for a smoother ride.

• Terrain-Adaptive Stabilizer – ON/OFF switch matches stabilizer to your riding conditions.