Shimano GRX FC-RX820 2x 12-Speed Crankset 4831t - 172.5mm

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From BikeTiresDirect

For riders seeking the best of both worlds the new Shimano GRX FC-RX820-2 12-Speed Crankset anchors the GRX 2x12 RX820 UNDROPPABLE drivetrain utilizing a gravel-optimized 4831 front chainrings that when paired with an 11-34T or 11-36T cassette deliver an ultra-wide gear range for spinning a comfortable cadence when cruising the flats smashing endless dirt road rollers or tackling a massive backcountry climb. | Shimano GRX FC-RX820 2x 12-Speed Crankset 4831t - 172.5mm