Shimano XTR M9100 Crank Fixing Bolt Replacement - Aluminum - Sold individually - Replacement crank fixing bolt for Shimano XTR FC-M9100. Use if the existing bolt gets cross-threaded or stripped. Use our XTR-CAP-DRIVER to remove the self-extracting cap to allow for replacement. - Remove crank arm bolt cap from crank. Remove damaged crank fixing bolt, being sure not to lose the thin cone washer. Insert the new crank fixing bolt and reinstall the crank arm bolt cap. When installing cranks, tighten crank fixing bolt to 45-55Nm (oem spec).