SHIMANO GRX FC-820-1 Chain Ring 40T

Shimano GRX FC-RX820 1x Chainring

The Shimano GRX FC-RX820 1x Chainring is compatible with 12-speed Shimano GRX cranksets. The aluminum construction uses Hollowglide technology to create a stiff and light chainring. They are available in 40T and 42T sizes and fit Shimano HG chains.

Other Versions to Consider

GRX 810 1x: If you are using an 11-speed Shimano GRX groupset, we carry the Shimano GRX FC-RX810 1x Chainring.

GRX 820 2x: If you are using a 12-speed Shimano GRX groupset and want to maximize your gear range, consider