DUB Non-Threaded Bottom BracketAluminum cups are lightweightGutter Seal Technology drastically improves sealing against the elementsSealed cartridge bearingsOne oversized spindle to work across every bottom bracket standardSignificantly lighter than GXP systemItem SpecificationsBB Shell Width (mm)73BB/Frame InterfaceBB30aBottom Bracket Shell I.D.42Defined ColorBlackSpindle Interface TypeSRAM DUB