SRAM DUB 68-73mm English BSA Threaded MTB Bottom Bracket

SRAM DUBT is the single replacement for 30mm and 24mm bottom bracket spindles options. They fit all frame shell standards and DUBT does NOT introduce any new frame shell standards.

DUBT Technology
The relationship between bottom bracket spindle and bearing is the core of DUBT technology. It's where stiffness meets durability. SRAM took it a step beyond conventional thinking and made everything simpler and better integrating the relationship between chainring, crank, spindle and bottom bracket. It's this clear system approach that equals better drivetrain performance.