SRAM's DUB Threaded Bottom Bracket uses the DUB spindle standard that unifies their crankset lineup across road, gravel, and mountain platforms. The 28.99mm spindle diameter sits between traditional 24mm and 30mm standards, letting SRAM optimize stiffness without the frame compatibility headaches that came with wider spindle designs. For threaded bottom bracket shells, this version drops into BSA or English-threaded frames with a 68mm or 73mm shell width.

The bearing cups thread directly into the frame with no adapters or press-fit complications. Steel bearings sit in alloy cups with contact seals that balance smooth rotation against contamination resistance. The threaded interface means you can install and remove the bottom bracket with standard tools, and the cups won't creak or shift like press-fit systems sometimes do. If you're building up a DUB-compatible crankset or replacing a worn bottom bracket on an existing setup, this is the straightforward choice for threaded frames.

DUB compatibility covers SRAM's current road and gravel cranksets including Rival, Force, and Red AXS cranks. The spindle standard also works across their mountain line, so if you're running multiple bikes with DUB cranks, you're dealing with one bearing system regardless of discipline. Spacers included in the box handle the difference between 68mm road shells and 73mm mountain shells.... Read More