With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner.

– Adjustable chain stabilizer prevents chain slapping and drops
– Switch stabilizer ON/OFF to match the terrain
– Gravel-tuned clutch tension
– Maximum front T difference: 16T
– Silent and uninterrupted rear shifting on rough terrain
– Low cog: Max. 36T/Min. 30T
– High cog: Max. 11T/Min. 11T
– Total capacity: 41T
– Smooth and reliable mixed-surface shifting
– Compatible with current 10s road DUAL CONTROL LEVER
– Compatible with wide-range front gearing