Shimano GRX FC-RX810-1 11 Speed Single Chainset - 40T - 172.5mm

- 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 11-speed single chainset offers optimum gearing for mixed terrains and riding styles
- Designed to work with HollowTech II type bottom bracket cups
- Compatible with 11-speed HG chains
- Anodized aluminium crank arms
- Lightweight aluminium chainring
- 4 arm, 110mm bolt circle diameter
- Weight: 644g (40T), 656g (42T) for 170mm