Shimano GRX RD-RX817 Di2 1x11 Speed Rear Derailleur

Features and Benefits:

• Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
• Low profile Shadow Plus design 11-speed rear derailleur with Di2 technology for fast and precise shifting performance
• Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
• High tolerance cold forged aluminium link plates and body construction is extremely light and durable
• 11-speed E-tube Di2 compatible
• Compatible with 11-speed HG chains
• Wide gear ratio compatible up to 11-42T
• For use with single chainset

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 a 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 11-speed MTB cassettes with a maximum low sprocket of 40T or 42T.

Technical specifications:

• Speeds: 1x11-speed (For single chainset)
• Shifting: Electronic, Di2
• Max. low sprocket: 42T
• Min. low sprocket: 40T
• Capacity: 31T
• Weight: 318g
• Model number: RD-RX817