GRX RD-RX820

Thanks to its integrated chain stabilizer, the GRX rear derailleur offers quieter operation and safe, precise shifting on mixed terrain. For rides on smooth surfaces, it features an on/off switch for the chain tensioner. The RD-RX820 rear derailleur is compatible with mountain bike cassettes up to 42 teeth on the small chainring.

• GRX 12-speed rear derailleur for double chainring
  
• The adjustable chain stabilizer prevents clacking and derailment.
  
• The clutch tension, optimized for gravel riding, can be activated/deactivated depending on the terrain.
  
• Maximum difference with the front chainring: 17 teeth
  
• Total capacity: 42 teeth
  
• Small chainring: Max. 34 teeth / Min. 30 teeth
  
• Upper sprocket: 11 teeth

Attributes