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Shimano GRX FC-RX820-1 GRX 12 speed single 1X chainring, 42T

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  • Detail
    • The Shimano FC-RX820 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-RX820 1X cranksets available in 42T, and 40T manufactured from lightweight aluminium and with anodised teeth for increased durability
    • Shimano part numbers: 42T - Y0SB98020, 40T - Y0SB98010
    • Compatible chain Shimano HG+ 12-speed
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