GRX RD-RX817 11-Speed Di2 Rear Derailleur
With an integrated chain stabilizer mechanism, the Shimano GRX RD-RX817 11-Speed Di2 Rear 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-RX817 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is compatible with mtb cassettes with a 42T low sprocket max.
Silent and uninterrupted rear shifting on rough terrain
Operates with Shimano Di2 for digital electronic shifting
Adjustable chain stabilizer prevents chain slapping and drops
SHIMANO SHADOW RD+
Smooth and reliable mixed surface shifting
Switch stabilizer ON/OFF to match the terrain
Gravel-tuned clutch tension
Compatible with current road DUAL CONTROL LEVER
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.