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. The RD-RX810 rear derailleur is compatible with road cassettes with a 34T low sprocket max.

Specifications

Average weight

255 g B-Axle_Hollow axle _ Cable adjuster _ Compatible chain HG-EV 11-speed/HG-X11 Direct attachment (Conventional) _ Fluoric coated link bushings 4 Low sprocket_Max. 34T Low sprocket_Min. 30T Max. front difference 17T Pulley_G pulley bearing _ Pulley_Sunken type pulley bolt _ Pulley_Teeth 13T Pulley_T pulley bearing _ Rear speeds 11 Top-Normal Spring Type SHIMANO SHADOW RD+ Top sprocket_Max. 11T Top sprocket_Min. 11T Total capacity 40T