SHIMANO GRX DI2 Rear Derailleur 11-speed (42T max low sprocket)

RD-RX817

shimano_grx

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

TECHNOLOGIES

PRODUCT SPECIFICATIONS

MODEL NO RD-RX817
SERIES GRX DI2
Average weight 318 g
Top-Normal spring type_SHADOW RD+
   
Direct attachment
E-tube connector (pcs) 0
E-tube port (pcs) 1
Firmware update by E-TUBE Project
Fluoric coated link bushings 4
Low sprocket_Max. 42T
Low sprocket_Min. 40T
Rear speeds 11
Sealed bearing guide pulley
Sealed bearing tension pulley
Top sprocket_Max. 11T
Top sprocket_Min. 11T
Total capacity 31T

SERIES LINE-UP

  • Bottom Bracket SHIMANO ULTEGRA Threaded Bottom Bracket 68/70 mm shell width
  • Cassette Sprocket SHIMANO 11-Speed 11-34T Road Cassette Sprocket
  • Cassette Sprocket SHIMANO ULTEGRA 11-Speed Road Cassette Sprocket
  • FREEHUB SHIMANO Disc Brake E-THRU Axle Rear FREEHUB 10/11-speed

REPLACEMENT PARTS

  • Rear Derailleur Pulley Pully set (RD-RX817)