GRX RD-RX820

With an integrated chain stabilizer mechanism, the GRX rear derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an on/off switch for the chain tensioner. The RD-RX820 rear derailleur is compatible with MTB cassettes with a 42T low sprocket max.

• GRX 12 speed rear derailleur for double cranks
  
• Adjustable chain stabilizer prevents chain slapping and drops
  
• Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain
  
• Maximum front difference: 17T
  
• Total capacity: 42T
  
• Low sprocket: Max. 34T/Min. 30T
  
• Top sprocket: 11T

Attributes