RaceFace X-Type bottom brackets for use with 24mm spindle cranksets from Race Face, Shimano and FSA.Allows the use of a 24mm spindle X-Type or EXI crankset in a 68/73mm BSA threaded bottom bracket shell6805 bearingsAluminum cupsInterchangable with select Shimano and FSA BB systemsInstalled using standard 16-notch bottom bracket toolItem SpecificationsBB Shell Width (mm)68BB Shell Width (mm)73BB/Frame InterfaceEnglishBottom Bracket Shell I.D.1.37Defined ColorBlackSpindle Interface TypeFSA MegaExoSpindle Interface TypeFSA MegaExo LightSpindle Interface TypeRaceFace EXISpindle Interface TypeShimano Hollowtech IIWeight95 RaceFace X-Type Bottom Brackets UPC: 821973209661