Shimano CS-M8100 XT 12-Speed 10-51t Cassette

12 gears, better than a dozen donuts
The Shimano Deore XT CS-M8100 12-speed cassette is optimized with wide range and close step gear combinations for mountain bike excellence.

• Shimano 12-speed XT cassette delivers a wide range with stealthily quiet shifting.
• Shift ramp designs provide fast and smooth shifts by Hyperglide+ technology
• Light and stiff construction reduces cassette inertia
• Faster acceleration and increased chain security
• 10T lowest sprocket realized by new freehub body construction
• Features Micro Spline body with smaller and more widely distributed splines