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Mountain Cranksets & Crank Arms

Shimano XT FC-M8000 Crank Arms

1x11 for Shimano XT is here. The M8000 XT Crank Arms can be set-up to run a 30, 32, or 34T single chainring with the DynaSys11 groupsets. Efficient, simplified shifting is the calling card for 1x11 systems, and Shimano delivers the optimal mix of durability and light weight matched with consistent shifting performance and enhanced chain management with XT. The excellence of XTR is carried down through the M8000 line-up, with fewer exotic materials and concessions to the weight-focused racing crowd.

The proprietary 96mm bolt circle diameter is ready for your chainring choice and provides the right balance of stiffness and strength. The new, compatible 3D composite chainrings feature stainless-steel teeth that have been engineered tooth-to-tooth for the chainload of each ring option, maximizing chain retention regardless of cassette cog position This Dynamic Chain Engagement system increases chain retention force by 150%, drastically decreasing the risk of chain drop. The lightweight Hollowtech II crank arms are exceptionally stiff and strong, and resilient to trail abuse. The M8000 crank arms can be used with either 68 or 73mm bottom brackets. Due to the variety of frame BB standards today, the crank arms do not come with one. Shimano has updated the BB with the MT800 threaded version, with smaller, more efficient bearings, better protecting seals and reduced weight with the new smaller, threaded cup size. The Press-Fit version has also seen the bearing/seal upgrades.

The 1x11 system pairs the chainring of your choice with either an 11-40, or 11-42 cassette, giving you terrific range. The XT M8000-1 Crank Arms are sold as a modular option and the chainring mounts from behind the spider. You buy the crank arms, chainring and BB seperately to match your frame requirements and gearing preference. We expect this new XT group to once again be our best selling Shimano mountain equipment. Time for an upgrade!

Features

  • Hollowtech II crank arms with 96mm BCD spider for 1x11 DynaSys11 drivetrain
  • Improved arm/ spider stiffness for incredible power transfer with new rigid chainring
  • Use with Shimano M8000 single-specfic rings featuring Dynamic Chain Engagement
  • Chainring options available: 30T, 32T, 34T (not included)
  • Compatible with 68/73mm BB shell width, threaded/press-fit BB(not included)
  • Chainline: 50.4mm
  • Q-factor: 168mm
  • Bolt Circle Diameter : proprietary off-set four arm, 96mm
  • Crank Arm Length : 165, 170, 175, 180
  • Color: Black