With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience while delivering shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain stabilizer. The RD-RX810 rear derailleur is compatible with road cassettes with a max cog size of 34T.

– Adjustable, gravel-tuned chain stabilizer prevents chain slapping and drops
– Switch stabilizer ON/OFF to match the terrain
– Silent and uninterrupted rear shifting on rough terrain
– Low cog: Max. 34T/Min. 30T
– High cog: Max. 11T/Min. 11T
– Total capacity: 40T
– Compatible with current road Dual Control Lever
– Maximum front chainring range: 17T