The XT M8000 Triple 40/30/22 11 Speed Chainset from Shimano allows you to ride anywhere with 11-speed rider tuned gearing. These cranks give you the power to choose how and where you ride with consistent shifting performance and enhanced chain management. This high performance chainset originates from the classic MTB group and uses the most advanced 11-Speed Dyna-Sys chainrings and an external super smooth bottom bracket for efficiency. The Cranks are Forged HollowTech II Aluminium to give unrivalled strength-to-weight ratio. The chainrings are hollow using a drilled steel and carbon composite construction for the middle ring, combined with a thicker aluminium can carbon composite outer ring and a plated aluminium inner ring to give excellent rigidity and durability. The chainrings have patented spike pins to ensure a smooth and fast gear change even under load and the close ratio gear combination provides improved cadence while reducing pedal feedback on suspension bikes. The 70 degree spider arm improves rigidity and the overall stiffness and strength has been increased with the advanced design to accommodate wider spaced bearings and an oversized axle. Available in Black only with 170mm or 175mm cranks.