Shimano 2x 11-Speed Drivetrain Performance The stiff & smooth 11-Speed crankset works effortlessly with the XT M8000 11-Speed cassette, with gear combinations that are rider-tuned. The gear ratios have been designed to ride efficiently for everyone's needs. The redesigned side swing derailleur is dialled for perfect shifting. Optimised, Smart Gearing System Whether you're riding uphill or looking for a more aggressive ride the gears have been tuned to maximise traction & deliver a tough, reliable, & fast performance.