The crank arms are net forged from 6066 aluminum with aggressive styling for a high strength to weight ratio and features our new exi interface external bottom bracket system and features our lightweight forged and cnc machined crmo steel exi spindle for easier crank installation and removal with standard tools it retains the same 3mm range chainline adjustment feature as our high end x type cranksets giving you the ability to achieve perfect drivetrain alignment with difficult suspension f