RD-RX815
SHIMANO GRX - DI2 - Rear Derailleur - SHIMANO SHADOW RD - 34T 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-RX815 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is compatible with road cassettes with a 34T low sprocket max.
• Silent and uninterrupted rear shifting on rough terrain
  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
• Maximum front difference: 17T
•  Top sprocket: Max. 11T/Min. 11T
•  Low sprocket: Max. 34T/Min. 30T
• Total capacity: 38T
RD-RX817
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.
•  Silent and uninterrupted rear shifting on rough terrain
  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
•  Top sprocket: Max. 11T/Min. 11T
•  Low sprocket: Max. 42T/Min. 40T
• Total capacity: 31T
 PRODUCT SPECIFICATIONS | ||
 MODEL NO | RD-RX815 | RD-RX817 |
 SERIES | GRX DI2 | GRX DI2 |
 Color | Series color | Series color |
 Average weight | 287 | 318 |
 Mount_Direct attachment | ✔ | ✔ |
 Firmware update by E-TUBE PROJECT | ✔ | ✔ |
 Total capacity | 38T | 31T |
 B-axle_Hollow axle | ✔ | ✔ |
 Sealed bearing guide pulley | ✔ | ✔ |
 Sealed bearing tension pulley | ✔ | ✔ |
 Mount_Direct mount compatible | ✔ | ✔ |
 Fluoric coated link bushings | 4 | 4 |
 Low sprocket_Max. | 34T | 42T |
 Low sprocket_Min. | 30T | 40T |
 Max. front difference | 17T | NA |
 Pulley_G pulley bearing | Sealed bearing | Sealed bearing |
 Pulley_Teeth | 13T | 11T |
 Pulley_T pulley bearing | Sealed bearing | Sealed bearing |
 Top-normal spring type_SHIMANO  SHADOW RD | ✔ | ✔ |
 Top sprocket_Max. | 11T | 11T |
 Top sprocket_Min. | 11T | 11T |
 Rear speeds | 11 | 11 |
 Di2 connectivity wired_Di2 shifting | ✔ | ✔ |
 Pulley | 13T | 11T |
 SD300 connector (pcs) | 0 | 0 |
 SD300 port (pcs) | 0 | 0 |
 SD50 connector (pcs) | 0 | 0 |
 SD50 port (pcs) | 1 | 1 |
Â
