Shimano XTR CS-M9100 cassette features better chain retention and ground clearance. This cassette is built with a strategic application of aluminum, titanium, and steel materials for an optimal blend of weight savings, rigidity, and durability.

• Compatible with Shimano Hyperglide+ chains
• Hyperglide+ technology offers better chain engagement, stronger retention, and smoother pedaling for greater power and confidence over rapidly changing terrain
• Micro Spline technology delivers lightweight aluminum freehub body to reduce weight and utilize a 10 tooth top gear
• A "Rhythm Step" cassette featuring a tighter gear spread than the 10-51t
• The CS-M9100 cassette meets durability requirements for E-MTB applications