Shimano GRX RD-RX812 rear derailleur 1/11-speed

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

RD-RX812

SHIMANO GRX - 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-RX812 rear derailleur 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

Specifications

• Series: SHIMANO GRX 11-speed
  
• Weight: 267 g
  
• B-Axle Hollow axle: Yes
  
• Cable adjuster: Yes
  
• Compatible chain HG-EV: 11-speed/HG-X11
  
• Direct attachment (Conventional): Yes
  
• Fluoric coated link bushings: 4
  
• Low sprocket Max.: 42T
  
• Low sprocket Min.: 40T
  
• Pulley G pulley bearing: Yes
  
• Pulley Sunken type pulley bolt: Yes
  
• Pulley Teeth: 11T
  
• Pulley T pulley bearing: Yes
  
• Rear speeds: 11
  
• Top-Normal Spring Type: SHIMANO SHADOW RD+
  
• Top sprocket Max.: 11T
  
• Top sprocket Min.: 11T
  
• Total capacity: 31T

Technologies:

SHIMANO SHADOW RD+

• Less distraction quiet drive train
  
• Rear derailleur stabilizer reduces chain slap
  
• Simple solution for chain drop
  
• Lighter and more efficient than roller type chain device