SHIMANO Cs-M8100 / 12-Speed Bicycle Cassettes

The Shimano Deore XT CS-M8100 12-speed cassette is engineered for mountain bike excellence, offering rider-tuned gear combinations for any trail. Featuring advanced Hyperglide+ technology and a lightweight construction, this cassette delivers the reliable shifting performance and durability required for both traditional mountain bikes and high-torque E-MTB applications.

Advanced Shifting with Hyperglide+ Technology

• Optimized shift ramp designs ensure fast and smooth gear transitions.

• Hyperglide+ technology provides seamless shifting even under heavy pedaling loads.

• Enhanced chain engagement promotes better power transfer and stability.

• Closer gear steps allow for a more consistent cadence on technical climbs.

Lightweight and Durable Construction

• High-rigidity design reduces cassette inertia for faster acceleration.

• Increased chain security prevents drops on rough terrain.

• Built to withstand the extreme durability requirements of modern E-MTB riding.

• Lightweight materials minimize unsprung weight for better suspension response.

Shimano Micro Spline Integration

• Designed exclusively for Shimano Micro Spline freehub bodies.

• Features smaller and more widely distributed splines to prevent cog damage.

• Enables the use of a 10-tooth small cog for a wider total gear range.

• Creates a stiffer interface between the cassette and the hub.

Technical Specifications

• Speed: 12-Speed drivetrain compatible.

• Gear Range Options: 10-45t (close step) or 10-51t (wide range).

• Hub Interface: Shimano Micro Spline.

• Finish: Silver and Black.

• Primary Application: MTB, All-Mountain, Enduro, and E-MTB.