Shimano GRX RX-812 GRX Rear Derailleur for 1x (42T Max)

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.

• FEATUREclose

  • Adjustable chain stabilizer prevents chain slapping and drops
  • Switch stabilizer ON/OFF to match the terrain
  • Gravel-tuned clutch tension
  BENEFITclose

  • Silent and uninterrupted rear shifting on rough terrain
  • Smooth and reliable mixed surface shifting
  • Compatible with current road DUAL CONTROL LEVER
  • Top sprocket: Max. 11T/Min. 11T
  • Low sprocket: Max. 42T/Min. 40T
  • Total capacity: 31T

  MODEL NO	RD-RX812
  SERIES	SHIMANO GRX 11-speed
  Color	Series color
  Average weight	267 g

  B-Axle_Hollow axle	✔
  Cable adjuster	✔
  Compatible chain	HG-EV 11-speed/HG-X11
  Direct attachment (Conventional)	✔
  Fluoric coated link bushings	4
  Low sprocket_Max.	42T
  Low sprocket_Min.	40T
  Pulley_G pulley bearing	✔
  Pulley_Sunken type pulley bolt	✔
  Pulley_Teeth	11T
  Pulley_T pulley bearing	✔
  Rear speeds	11
  Top-Normal spring type_SHADOW RD+	✔
  Top-Normal Spring Type	SHIMANO SHADOW RD+
  Top sprocket_Max.	11T
  Top sprocket_Min.	11T
  Total capacity	31T