Shimano RX812 Rear Derailleur Long cage Grey Tubeless Genuine Park Tool CRS-15EXT extension

Genuine Park Tool CRS-15EXT extension kit

The DebonAir Progressive air spring helps deliver a supportive and tunable ride

11mm wrench size

CUES features Shimano’s new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain

giving riders confidence in varying conditions

Shimano RX812 Rear Derailleur Long cage Grey Tubeless Genuine Park Tool CRS-15EXT extensionRear Der Shimano RD RX812 GRX 11 Speed Wide Type When the going gets gravelly Gravel tuned chain stabilization and drivetrain performance. The Shimano GRX RX812 11 speed rear derailleur provides silent rear shifting on rough terrain. An adjustable Shimano Shadow RD+ clutch prevents chain slapping and drops. Key Features Compatible with Shimano road Dual Control Levers Gravel tuned clutch tension provides smooth and reliable mixed surface shifting