Wheels Manufacturing BSA Bottom Brackets for frames that accept English (BSA) threaded bottom bracketsIncludes replacement dust covers and sealsCNC-machined aluminum shell for precise bearing alignment and frame fitABEC-5 Angular Contact sealed bearingsAngular contact ball bearings are particularly suitable for carrying combined axial and radial loadsReplaceable Enduro bearingsMade in the USAItem 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 IIWeight96 Wheels Manufacturing BSA Bottom Bracket Bottom Brackets UPC: 811079020109