Shimano FC-RX820 GRX chainset 40T, single, 12-speed, Hollowtech II, 170 mm

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world

The HollowTech II 12-speed single chainset offers optimum gearing for mixed terrains and riding styles

Designed to work with HollowTech II type bottom bracket cups

Compatible with 12-speed Hyperglide+ chains

Anodized aluminium crank arms

Lightweight aluminium chainring
4 arm, 110 mm bolt circle diameter