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

With its Beam Spider construction, the new Shimano Deore XT M8100 12-speed cassette shaves weight while increasing Shimano's MTB gearing range another gear. Using Shimano's new MICRO SPLINE freehub body and Hyperglide+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance.

• Definitive shifting performance
• New shift ramp designs provide the fastest, smoothest shifts by Hyperglide+
• Beam Spider
• Lighter and stiffer construction
• Reduces cassette inertia resulting in faster acceleration and increased chain security
• Micro Spline
• 10T lowest sprocket realized by new FREEHUB body construction
• Wide range and close step 12-speed drivetrain
• Model: CS-M8100-12
• Series DEORE XT M8100
• Average weight: 461 g (10-45T), 470 g (10-51T)
• Combination: 10-12-14-16-18-21-24-28-32-36-40-45T | 10-12-14-16-18-21-24-28-33-39-45-51T
• Combination name(Group name): 10-45T, 10-51T
• Compatible chain: HG 12-speed
• Speeds: 12-speed
• Spider arm_QTY: (pcs) 1
• Type: Hyperglide+