SHIMANO's XTR FC-M9120-1 crank arms feature an entirely new construction for use with direct mount chainrings. These crank arms are of a lightweight and rigid Hollowtech II construction.
. Special gear teeth profile designed for MTB riding usage
. Crankset can be used as common component
. Smoother driving even over bumpy terrain
. Lighter and stiffer design
. Exchangeable chainring by direct mount and one key release
. Exchangeable of single and double chainring by direct mount
. Crank Arm Length: 165mm
. Q-factor: 168mm
. Chainline: 52mm
. Recommended BB Pressfit: SM-BB94-41A (sold separately)
. Recommended BB Threaded: SM-BB93 (sold separately)
. Threaded BB Width: 68/73mm