xt M8000 cut 1It was inevitable…Shimano loves to trickle stuff down from XTR to XT to whatever, so it is no surprise to see XT go to 11spd.  Note that the cassette includes a 42T option, but no 10T cog.

From the Press Release (more on this from Sea Otter):

Shimano DEORE XT M8000 Delivers Premium 11-speed Performance

OSAKA (April 15, 2015) – With DEORE XT M8000, Shimano has elevated the performance level and options of the industry’s original mountain bike component group to accommodate limitless riding adventures. With DEORE XT M8000, Shimano delivers XTR-level features, premium performance and value.

Now 11-speed, new DEORE XT M8000 brings powerful, dynamic performance that establishes a new benchmark for mountain bike excellence. With DYNA-SYS11 Shimano encourages modern mountain bikers to ride anywhere with its advanced gearing concept that helps maintain rider efficiency. Designed with both XC and aggressive trail riders in mind, DYNA-SYS11 brings enduring performance thanks to smart materials and enhanced drivetrain stability due to new derailleur and chainring designs.

Expanded Rhythm Step gear options

Like its XTR sibling, DEORE XT M8000 offers 1×11, 2×11, and 3×11 crank options to satisfy any type of rider ability level or terrain. New 2×11 and 3×11 M8000 drivetrains, expand range while maintaining even better rhythm when paired with an 11-40T cassette for optimized cadence control. An exciting addition for DEORE XT M8000 is a 1×11 specific 11-42T cassette that expands Shimano’s 1×11 gear range slightly over the race inspired 11-40T of XTR.

  • HG-X11 specific tooth profile
  • Aluminum spider
  • Aluminum (40T/42T) and steel cogs
  • Rhythm Step progressiono 11-13-15-17-19-21-24-27-31-35-40 o 11-13-15-17-19-21-24-28-32-37-42DEORE XT cranks: Rider Tuned for any terrainDEORE XT M8000 cranks feature Rider Tuned 11-speed gearing that will take you anywhere you want to go. Whatever option you choose, new materials provide consistent long-life shifting performance and chain management.The DYNAMIC CHAIN ENGAGEMENT (DCE) 1×11 tooth profile in new XTR and DEORE XT groups increases chain retention force by 150%, drastically decreasing dropped chains. Stainless steel chain ring teeth provide long life and lasting chain retention.

FC-M8000-1_zz_zz_STD_S1-bAll new DEORE XT cranks turn on an updated bottom bracket that reduces weight and bearing drag while improving mud durability.

  • Most advanced DEORE XT chainrings ever produced
    o Long wearing and great shifting
    o Carbon/stainless steel construction (outer or middle ring)
  • 1×11 with DYNAMIC CHAIN ENGAGEMENT – Offered in 30T, 32T, and 34T
  • True Trail 2×11
    o Optimized gear combination for improving shifting quality and drivingefficiency
    o Offered in 34-24T, 36-26T, 38-28T
  • Bold 3×11 for the lowest gear and widest range ever produced o Offered in 40-30-22T
  • Chainline +3mm outboard cranks offered for 148 OLD hubs o +3mm outboard chain line
    o 1×11 with 30T, 32T, and 34T
    o 2×11 with 36-26T
  • New bottom bracket
    o Press fit and threaded options o Improved durability
    o Reduced seal drag
    o Lighter weightRedesigned, lighter action derailleursRD-M8000-GS_zz_zz_STD_S1-bBoth the front and rear DEORE XT M8000 derailleurs receive a complete makeover. The DEORE XT M8000 rear derailleur features Shimano’s pioneering Shadow RD + technology and a refined geometry for increased stability. The Shadow RD + is also now more easily adjustable for either maximum stability or lower shift effort.
  • New Shadow design with optimized, shallow slant angle
  • Extremely low profile design
  • Reduced shift effort
  • Improved driving and shifting stability
  • External adjusting clutch tension
  • 1×11 and 2×11 compatible GS and 3×11 compatible SGS options
  • High efficiency pulleys
  • Direct mount compatibleDebuted on XTR M9000, the DEORE XT Side Swing front derailleur brings a drastic reduction in shift effort while also increasing tire clearance.
  • FD-M8020 2×11 and FD-M8000 3×11 options
  • Light, crisp shift action
  • New structure with current mounting options and new cable routingo High clamp, Low clamp, D-type, E-type (without plate)
  • Increased tire clearance allows for shorter chainstays

• Designed with long travel trail bikes in mind

DEORE XT shifters enhance feel, ergonomics, reduce shift effort

Shimano’s new DEORE XT M8000 shifters feature improved ergonomics and longer, textured levers that create an enhanced interface between rider and controls and decrease shift effort. MULTI RELEASE shifting increases trail capability while Vivid indexing guarantees shift accuracy.

  • 20% lower shift effort with new OPTISLICK cable
  • Improved vivid index mechanism
  • New ergonomics
  • Textured levers
  • Multi / Instant and 2-WAY releaseIndustry-standard braking is even betterDEORE XT hydraulic disc brakes are the industry benchmark for affordable high performance. With M8000, Shimano retains that standard while upgrading with a new, integrated master cylinder. This gives a sleeker look, saves weight and frees up valuable handlebar space.
  • Trail rated for power
  • Servo Wave levers offer high power and short stroke
  • Integrated master cylinder is lighter, cleaner and more durable
  • Refined Servo Wave for improved feel and feedback
  • Narrow clamp band offers increased adjustment
  • Free stroke and tool-free reach adjustLighter, wider rimmed DEORE XT Race and Trail wheelsThe WH-M8000-TL-275/29 and WH-M8020-TL-275/29 offer new tubeless-ready aluminum rims in 20mm and 24mm internal width respectively. Each rim provides a wider platform for modern mountain bike tires while also saving 40 grams over previous models. All wheel sets use 28 butted spokes both front and rear.
  • Tubeless aluminum options
    o Trail (WH-M8020) with 24C tubeless rim o Race (WH-M8000) with 20C tubeless rim
  • New lightweight hubs feature
  • 28 butted spokes front and rear
  • Hand-built Shimano qualityDEORE XT pedals offer wider, redesigned platformShimano’s new PD-M8000 Race and PD-M8020 Trail pedals offer legendary SPD performance that improves the rider experience at this vital connection point. With increased stability and contact area over the previous generation, power, control and confidence are improved.

• Race (PD-M8000) and Trail (PD-M8020) models

  • 2.8mm wider platform increases stability PD-M8000 (vs PD-M780)
  • 3.3mm wider platform increases stability PD-M8020 (vs PD-M785)
  • Lower platform height by 0.5mm
  • Increased pedal-to-shoe contact area improves efficiencyo PD-M8000 Race: 7.7% more contact (vs PD-M780) o PD-M8020 Trail: 11.7% more contact (vs PD-M785)