Shimano Deore XT CS-M8100 12 Speed Micro Spline Mountain Bike Cassette - 10-51

Shimano Deore XT M8100 - 12 Speed Micro Spline Cassette - 10-51. Shimano Deore XT M770 - 9 Speed Mountain Bike Cassette - 11-34. High performance 12-speed Micro Spline MTB cassette. Shimano SLX M7000 - 11 Speed Mountain Bike Cassette - 11-40.