Shimano DEORE XT FC-M8130-1 Crankset - 170mm 12-Speed Direct Mount Hollowtech II Spindle Interface BLKShimano DEORE XT FC M8130 1 Crankset 170mm 12 Speed Direct Mount Hollowtech II Spindle Interface Black. The Shimano Deore XT FC M8130 crankset for MTB features a rigid and lightweight design for aggressive trail riding. The simplicity of a 1x drivetrain with the stability and compatibility of Hollowtech II technology. Designed for Super Boost+ spacing. 1x Chainring sold separately Hollow forged crank maximizes power transfer while limiting weight