GRX RD-RX817 Di2 Rear Derailleur

GRX RD-RX817 Di2 Rear Derailleur

Regular price $334.99 Save 0%

Zero Interest or $28/mo if paid in full within 12 months.


The Shimano GRX 11-speed Di2 rear derailleur integrates electronic shifting with silent and uninterrupted rear operation on rough terrain. An adjustable Shimano Shadow RD+ clutch prevents chain slapping and drops.

  • Operates with Shimano Di2 for digital electronic shifting
  • Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
  • For 1x drivetrains
  • Rear Derailleur Mount Type: Shimano Rear Direct Mount
  • Drivetrain Speeds: 11
  • Cage Length: Long
  • Chain Wrap Capacity (teeth): 31 teeth
  • Largest Cog: 42
  • Color: Black
  • Weight: 318 g
  • Rear Der/Shifter Compatibility: Shimano Road Di2