The SRAM DUB bottom bracket series has a simple job- to connect crankarms and protect the smooth, long-lasting application of power to the drivetrain. SRAM engineered the oversized DUB spindle to work across every bottom bracket standard, simplifying crankarm compatibility.For Super Boost + cranksDesigned for use with SRAM SuperBoost+ CranksetsGutter Seal Technology drastically improves sealing against the elementsSealed cartridge bearingsOne oversized spindle to work across every bottom bracket standardItem SpecificationsBB Shell Width (mm)73BB/Frame InterfaceEnglishBottom Bracket Shell I.D.1.37Defined ColorBlackSpindle Interface TypeSRAM DUB SRAM DUB SuperBoost+ Threaded Bottom Bracket Bottom Brackets UPC: 710845825866