Shimano part number: 42T - Y0JP98020.
Shimano GRX GRX FC-RX810 chainring 48T-ND, for 48-31T
Shimano GRX FC-RX600-1 110mm BCD 4 Arm Chainring - 40T 1 x 10/11 speed RX810 NEW
Shimano GRX FC-RX600 11 Speed 30t Chainring
Shimano GRX FC-RX600 1x Crankset 172.5mm Cranks, 40T Chainring
Shimano GRX FC-RX600 Chainring 40T
