Shimano Deore CS-M6100 12-speed MTB cassette - ICSM610012051

The Deore CS-M6100 cShimano e (ref. ICSM610012051) is a 12-speed Hyperglide+ MTB cassette designed for modern single-chainring drivetrains Shimano. With its 10–51-tooth range, it offers a wide gear range ideal for XC, trail and marathon riding, ensuring easy climbs and efficient acceleration.

Thanks to Hyperglide+ technology, this cassette improves the smoothness of gear changes, even under load, by reducing jerkiness and optimising pedalling fluidity. Its Beam Spider construction reduces weight whilst increasing overall stiffness, for a more stable and durable drivetrain.

Technical specifications

• Brand: Shimano
• Model: CS-M6100
• Partnumber: ICSM610012051
• Speeds: 12-speed
• Gear ratios: 10-12-14-16-18-21-24-28-33-39-45-51
• Type: single-chainring MTB cassette
• Technology:
  • Hyperglide+
  • Beam Spider construction
• Freewheel body: Micro Spline (Shimano, 12-speed)
• Compatibility: Shimano HG+ 12-speed chains
• Use: XC / trail / marathon mountain biking

Key features

• Very wide gear range (10–51T) for varied terrain
• Smooth gear changes even under full load
• Lightweight construction thanks to the Beam Spider support
• Excellent stiffness for efficient pedalling
• Perfect compatibility with Shimano Deore 12-speed groupsets
• Ideal for technical climbs and fast descents alike

Wide compatibility

This cassette requires a Micro Spline freehub body. It is designed to work with the following Shimano 12-speed groupsets:

• Deore M6100
• SLX M7100
• XT M8100
• XTR M9100

It is also optimised for use with a Shimano HG+ 12-speed chain to deliver the best shifting performance.

FAQ

Is this cassette compatible with an 11-speed hub?

No, it requires a specific Micro Spline freehub body, which differs from standard 11-speed designs.

Can it be used with a SRAM drivetrain?

No, it is designed for the Shimano Hyperglide+ and Micro Spline ecosystem.

How does it differ from an XT or XTR cassette?

The Deore is slightly heavier and not quite as high-end, but features the same Hyperglide+ shifting technology.

Is it suitable for e-bikes?

Yes, it can be used on 12-speed- Shimano-compatible electric mountain bikes, but wear may be faster depending on usage.

Do you need a specific chain?

Yes, a Shimano 12-speed HG+ chain is strongly recommended to ensure smooth shifting and durability.