The shimano xtr m9020 trail 1 x11 speed crank set is ideal for riders who choose simplicity over gear range and need additional strength for the abuse of aggressive trails nd enduro racing these trail specific fc m9020 cranks are cold forged and compatible with m9000 1x 2x and 3x chainrings on its standard 168mm q factor crankarms the crank arms have a carbon aluminium 3d hollow structure to increase stiffness and the outer chainring features titanium teeth which helps to create a stiff ligh