The Shimano Deore XT CS-M8000 11-speed cassette embodies the excellence of Japanese MTB drivetrain technology. Combining lightness, durability and shifting precision, this cassette benefits from decades of Shimano expertise in the field of off-road drivetrains. Thanks to its DYNA-SYS11 technology and Rhythm Step progression, it maintains optimal pedaling rhythm on all terrains, from cross-country to the most demanding technical trails.

Technical architecture and materials

The CS-M8000 is built on an aluminum sprocket carrier that drastically reduces weight while preserving structural rigidity. The sprockets intelligently combine forged steel and aluminum: the small and medium sprockets are made of steel for maximum wear resistance, while the largest sprocket (42T) is machined from aluminum to save precious grams. The sprockets are hollowed and drilled to optimize the weight/rigidity ratio. The nickel-plated treatment ensures excellent corrosion resistance and extends service life.

Hyperglide and Rhythm Step technology

• Hyperglide: Computer-designed tooth profiles and shift ramps for fast, precise and smooth shifting even under load. The chain remains in permanent contact during shifting.
• Rhythm Step (rhythmic progression): Optimized gear progression that eliminates brutal jumps between sprockets. The small sprockets (11T to 21T) progress in 2-tooth increments for fine control of cadence on rolling terrain. Beyond 21T, the gaps gradually widen (3 to 5 teeth) towards the climbing sprockets, reflecting the lesser need for precision on steep climbs.
• Increased pedaling efficiency: This architecture reduces shifting shocks and power losses, allowing you to maintain fluidity and rhythm on varied terrain.

Compatibility and versatility

• Universal freehub body: Installs on all Shimano/SRAM HG 8/9/10/11-speed freehub bodies, without the need for a specific body (no XD driver required).
• Multiple configurations: The 11-40T and 11-42T versions are compatible with 1x11, 2x11 or 3x11 drivetrains, offering great flexibility depending on your riding style and terrain.
• Compatible chains: Works with all Shimano HG-X11 11-speed chains (HG-601, HG-701, HG-901). For optimal performance, favor a chain with SIL-TEC coating.
• Recommended derailleurs: Shimano XT M8000 or SLX M7000. The derailleur must have sufficient capacity to handle the gear range.
• e-MTB approval: The CS-M8000 is certified for e-bike use, capable of handling the additional torque generated by electric assistance without compromising longevity.

Available variants

• 11-40T: Ratios 11-13-15-17-19-21-24-27-31-35-40 — Weight 411 g (Ref. ICSM8000140)
• 11-42T (variant of the provided EAN code): Ratios 11-13-15-17-19-21-24-28-32-37-42 — Weight 434 g (Ref. ICSM8000142 / EAN 4524667322238)
• 11-46T: Ratios 11-13-15-17-19-21-24-28-32-37-46 — Weight 437 g — Compatible only with 1x11 drivetrain (Ref. ICSM8000146)

Key features

• Lightness without compromise: 434 g for the 11-42T version, an excellent weight/strength ratio thanks to the steel-aluminum alloy.
• Smooth and responsive shifting: Hyperglide technology guarantees precise indexing and instantaneous gear changes, even when pedaling under high load.
• Proven durability: Treated steel sprockets resist intensive wear, while the nickel coating protects against oxidation and external aggressions.
• Versatility of use: Suitable from XC to trail/enduro, compatible with single, double or triple chainring configurations.
• Simple installation: Aluminum lockring included, standard mounting on HG body without specific tools.

Recommended use

The Deore XT CS-M8000 11-42T cassette is designed for demanding MTB riders, from XC racers to all-mountain trail riders. It is also perfectly suited to adventure gravel configurations seeking climbing range without sacrificing close ratios on flat terrain. e-MTB compatible, it also supports e-bike riders who intensively stress their drivetrain.