For riders seeking the best of both worlds the new Shimano GRX FC-RX820-2 12-Speed Crankset anchors the GRX 2×12 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.