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Product Images

Shimano XTR CS-M9101 12 Speed Cassette
Shimano XTR CS-M9101 12 Speed Cassette
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Shimano XTR CS-M9101 12 Speed Cassette 2
Shimano XTR CS-M9101 12 Speed Cassette 1

Shimano XTR CS-M9101 12 Speed Cassette


Pricing and Order Section

Mfg PartNum:
MSRP: $409.99
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In Mountain bike riding, trail conditions change drastically from one second to the next, from one turn to the next. Mountain bikers need to be able to seamlessly Perceive the conditions, Judge their options, and Operate their bike in a split second. XTR satisfies the needs of the most demanding riders by providing the highest level of precision and integration. We refocused on the original goal of XTR - to be the ultimate race components. Definitive HYPERGLIDE+ shifting let you pedal continuously while shifting.

The M9100 compatible cassettes now have ramps in both directions so shifting to either the next larger OR smaller cog is quicker, easier and smoother. M9100 compatible cassettes are designed for the new Micro Spline freehub interface and are not backwards compatible with older SRAM/Shimano style freehubs. The smallest 4 cogs are steel for strength, then 5 titanium cogs for weight saving and finally the largest 3 cogs are aluminum riveted to an aluminum spider for rigidity. All cogs are coated with special long-wearing sufrace treatments for longevity.

Features & Specs:

  • 12 speed mountain cassette
  • All cogs coated with special long-wearing surface treatments for longevity
  • New Micro Spline freehub interface for compatibility with new M9100 hubs
  • Mixed metal application for optimum strength to weight ratios

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Drivetrain Speed: 12-Speed 

Cassette Use: MTB 


Mfg PartNum: ICSM9101045 

Cassette Type: Shimano 12 


Mfg PartNum: ICSM9100051A 

Cassette Type: Shimano 12 


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Reviewed 3/13/2020
by Anonymous
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There is XTR and then there is anything else.

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Mechanic's Corner

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A guide to understanding and calculating bicycle gear inches.
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