NEW Shimano GRX RD-RX812 Rear Derailleur 11-Speed, Long Cage, Clutch 1x, 42t Max height_5ft-03in Patented cam resists attacks by

Patented cam resists attacks by pry bars and hammers

- Not Compatible with SRAM eTAP and Flattop

it's up to the job when just a bit more room is needed

and efficient

NEW Shimano GRX RD-RX812 Rear Derailleur 11-Speed, Long Cage, Clutch 1x, 42t Max height_5ft-03in Patented cam resists attacks byThe Shimano GRX 11 speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. Adjustable Shimano RD+ chain stablizer prevents chain slapping and