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XT CS-M8100 cassette
The Shimano Deore XT CS-M8100 cassette features the Hyperglide+ technology which guarantees high shifting speed, precision and smoothness when shifting up and down and contributes to an extremely quiet drivetrain. The 12-speed cassette is available in 2 versions: 10-45 and 10-51 teeth.
The 10-45 teeth cassette produces as few gear jumps as possible while the 10-51 teeth cassette covers a wide gear range. Both versions have an aluminium spider construction and the two largest sprockets are made of aluminium each as well. This not only reduces the weight, but improves also robustness and longevity.