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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.
SHIMANO GRX - DI2 - Rear Derailleur - SHIMANO SHADOW RD+ - 42T max low sprocket - 11-speed
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-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.
| MODEL NO | RD-RX817 |
|---|---|
| SERIES | GRX DI2 |
| Color | Series color |
| Average weight | 318 |
| Rear speeds | 11 |
|---|---|
| Top-normal spring type|SHIMANO SHADOW RD+ | ✔ |
| Mount|Direct attachment (Conventional) | ✔ |
| Mount|Direct Mount | ✔ |
| Total capacity | 31T |
| Low sprocket|Max. | 42T |
| Low sprocket|Min. | 40T |
| Top sprocket|Max. | 11T |
| Top sprocket|Min. | 11T |
| Fluoric coated link bushings | 4 |
| Pulley|G pulley bearing | Sealed bearing |
| Pulley|T pulley bearing | Sealed bearing |
| Pulley|Teeth | 11T |
| B-axle|Hollow axle | ✔ |
| Di2 connectivity wired|Di2 shifting | ✔ |
| Firmware update by E-TUBE PROJECT | ✔ |
| SD50 port (pcs) | 1 |
| SD300 port (pcs) | 0 |
| SD50 connector (pcs) | 0 |
| SD300 connector (pcs) | 0 |
