Shimano GRX RD-RX810 Disc Rear Derailleur

The Shimano GRX RD-RX810 is a gravel-focused rear derailleur engineered for secure, quiet shifting across mixed terrain. With an integrated, adjustable chain stabilizer and a user-accessible ON/OFF clutch switch, the RD-RX810 lets riders tune chain tension to match surface conditions — from rough, technical trails to smooth roads. Built on SHIMANO SHADOW RD+ low-profile geometry and optimized for road cassettes with a 34T max low sprocket, the unit balances precise indexing, reliable chain retention, and straightforward maintenance for modern gravel and mixed-surface setups.

• Silent and uninterrupted rear shifting on rough terrain thanks to the integrated chain stabilizer
• Adjustable chain stabilizer prevents chain slapping and drops on technical sections
• Technology: SHIMANO SHADOW RD+ low-profile design reduces snagging and impact risk
• Toggle clutch ON/OFF to quickly adapt chain tension to terrain and riding style
• Gravel-tuned clutch tension improves chain retention without compromising shift feel
• Smooth and reliable mixed-surface shifting for gravel, cyclocross, and touring
• Compatible with current road Dual Control Levers for straightforward integration
• Maximum front difference: 17T; designed to handle common gravel chainring combinations
• Top sprocket: Max 11T / Min 11T — Low sprocket: Max 34T / Min 30T; supports wide-range road cassettes
• Total capacity: 40T; serviceable design simplifies maintenance and replacement of wear parts