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Shimano Deore XT CS-M8100 12-Speed Mirco-Spline Cassette (10-45T)

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The Shimano Deore XT CS-M8100 12-speed cassette features a wide range of gears with rider optimized jumps in between cogs, for smooth and efficient pedaling.


  • Smooth shifting performance provides confidence to enjoy any trail
  • Light and stiff construction allows faster acceleration and increased chain security
  • HYPERGLIDE+ technology provides better chain engagement, stronger retention, and smoother pedaling
  • Shimano Micro Spline body that features smaller and more widely distributed splines to limit cog damage on freehub
Range: 10-45t (10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 40, 45t) & 10-51 (10, 12, 14, 16, 18, 21, 24, 28, 33, 39, 45, 51t) 
Cassette Body Type: Shimano Micro Spline 
Drivetrain Speeds: 12
Weight: 461 g (10-45T), 470 g (10-51T)

This product was added to our catalog on September 3, 2019