The Shimano Deore XT FC-M8100 crankset for MTB offers the simplicity of a 1x drivetrain with the stability and compatibility of Hollowtech II technology. Chainring sold separately Hollow forged crank maximizes power transfer while limiting weight Shimano&';s Hollowtech II technology provides the best balance of stiffness, strength, weight and rotating performance. Features 52mm chainline designed for Boost spacing 172mm Q-factor