Shimano CS-M9101-12 Cassette - 12-Speed 10-51t Black/Gray Micro Spline

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