SRAM GXP Ceramic Italian Bottom BracketThe SRAM DUB Italian Bottom Bracket is the premium solution for integrating SRAM's lightest and stiffest cranksets into frames featuring a traditional 70mm Italian threaded shell. By utilizing DUB technology, this system unifies the relationship between the spindle and bearings to deliver superior drivetrain performance and longevity. Elite Construction: This model features high performance ceramic sealed cartridge bearings housed in precision