Shimano GRX RD-RX812 11-Speed Rear Derailleur 2026specspringsale Post mount caliper

Post mount caliper

the NX crankset is engineered for complete chain control-each tooth's profile is precisely engineered to work quietly

Removable spider offers the ability to convert between existing chainring standards while remaining flexible to future developments

5" and very accurate digital gauge with easy-to-read LCD display

Shimano GRX RD-RX812 11-Speed Rear Derailleur 2026specspringsale Post mount caliperDetails With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience with shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain stabilizer. The RD RX812 rear derailleur is compatible with MTB cassettes with a max cog size of 42T. Adjustable, gravel tuned chain stabilizer prevents chain slapping and drops Switch stabilizer ON OFF