The CS-M8200 is the further development of the HYPERGLIDE + shifting system. New tooth profiles of the cassette improve shifting under high loads while remaining smooth, fast, and durable. The 10-51T cassette offers a 510% gear range and is thus the most versatile cassette in the DEORE XT family. It is also MICRO SPLINE-compatible and consists of steel and aluminum gears to optimize weight and durability.