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Shimano Cassette CSM6100 Deore 10-51T 12 Speed

by Shimano
Original price R 1,895.00 - Original price R 1,895.00
Original price
R 1,895.00
R 1,895.00 - R 1,895.00
Current price R 1,895.00
Shipping Info

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The Shimano CS-M6100 Deore 12-Speed Cassette 10–51T is Shimano’s entry-level 12-speed MTB cassette designed for wide-range gearing, modern 1x drivetrains, and Micro Spline freehub systems.

Shimano CS-M6100 Deore 12-Speed Cassette 10-51T

What it is

This is a:

  • 12-speed mountain bike cassette
  • Part of the Shimano Deore M6100 series
  • Uses Hyperglide+ shifting technology
  • Requires a Micro Spline freehub body

Gear range (10–51T)

The full gear spread is:

10121416182124283339455110-12-14-16-18-21-24-28-33-39-45-51

What this means:

  • 10T → high-speed pedalling on flats/downhill
  • 51T → very easy climbing gear for steep MTB terrain

This is one of the widest MTB ranges available in Shimano’s 12-speed ecosystem.


Key features

Hyperglide+ technology

  • allows shifting under load
  • smoother upshifts and downshifts
  • better chain engagement on rough terrain

Steel-dominant construction

  • most sprockets are steel for durability
  • designed for long life in MTB conditions

Beam spider design

  • reduces weight compared to older cassettes
  • increases rigidity for better shifting consistency

Micro Spline freehub required

  • specifically needed for the 10T small cog
  • not compatible with HG (8/9/10/11-speed) freehubs

Ride feel

  • very wide gearing (good for steep climbs + fast sections)
  • smooth shifting even under pressure
  • slightly heavier than SLX/XT/XTR versions
  • very “forgiving” setup for rough MTB terrain

Best suited for

  • XC mountain bikes
  • trail bikes
  • e-MTB builds (with compatible hub)
  • riders needing maximum climbing range
  • budget-friendly 12-speed upgrades

Pros

  • huge gear range (10–51T)
  • strong climbing capability
  • smooth Hyperglide+ shifting
  • durable steel construction
  • good value for 12-speed system

Trade-offs

  • requires Micro Spline hub (wheel upgrade may be needed)
  • heavier than higher-tier Shimano cassettes
  • wears faster than XT/XTR due to more steel content

Bottom line

The Shimano CS-M6100 10–51T is a durable, wide-range 12-speed MTB cassette that delivers excellent climbing ability and smooth Hyperglide+ shifting, making it one of the best value options for modern Deore 1x12 drivetrains.

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