The Shimano Deore XT Cassette CS-M8100-12 is a high-performance 12-speed cassette designed for smooth and efficient gear shifting. This cassette enhances your mountain biking experience with its advanced features and reliable performance. Ensures seamless gear transitions with Hyperglide+ technology Beam Spider construction offers a lighter and stiffer design Reduces cassette inertia for improved acceleration and chain stability Micro Spline technology includes a 10T sprocket with a new freehub design 12-speed drivetrain provides a wide gear range with close gear steps