Shimano GRX RD-RX817 Rear Derailleur - 11-Speed Long Cage Black With Clutch Di2 For 1x. GRX RD-RX815 Di2 Rear DerailleurOperates with Shimano Di2 for digital electronic shiftingGravel-tuned clutch tension provides smooth and reliable mixed surface shifting
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Shimano GRX RD-RX817 Rear Derailleur – 11-Speed Long Cage Black With Clutch Di2 For 1x. GRX RD-RX815 Di2 Rear Derailleur
| Largest Cog | 42 |
| Color | Black |
| Rear Der/Shifter Compatibility | Shimano Road Di2 |
| Rear Derailleur Mount Type | Shimano Rear Direct Mount |
| Drivetrain Speeds | 11 |
| Weight | 318 |
| Chain Wrap Capacity (teeth) | 31 |
| Cage Length | Long |
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