Shimano XT CS-M8100 12-Speed Cassette is designed for MTB excellence with optimized rider-tuned gear combinations. It features Hyperglide+ technology with designs for fast and smooth shifts. The cassette is lightweight and stiff, reducing cassette inertia for faster acceleration and increased chain security. It is compatible with a Shimano Micro Spline body that limits cog damage on the freehub. Additionally, the CS-M8100 meets durability requirements for E-MTB applications.