Shimano Cycle Bicycle FC-RX610-1 GRX 12-Speed Single 1X Chainring Black - 40T

The Shimano FC-RX610 GRX 12 speed single chainrings are the perfect replacement for worn or damaged chainrings Shimano's class leading chainrings offer the optimum balance of light weight and rigidity for precise shifts even under high loads Featuring a thick thin chainring teeth profile to give you better chain retention and smoother pedalling in the toughest and muddiest of conditions Designed to work with Shimano's 12-speed HG chain providing more efficiency and improved power transfer Genuine Shimano replacement chainrings for the FC-RX610 1X cranksets available in 40T, and 38T offering lower ratio's and manufactured from steel for increased durability Shimano part numbers: 40T - Y0SR9802T, 38T - Y0SR9801T Compatible chain Shimano HG 12-speed