T47 threading splits the difference between old-school BSA reliability and press-fit's oversized bearing real estate — a wide 47mm shell that threads in, so you get the stiffness benefits without the creak risk that gives press-fit a bad name. SRAM's DUB T47 bottom bracket is the outboard-bearing version built for 68mm road and road-wide shells, sized for the 29mm DUB spindle that runs through every current SRAM road crankset.

The whole point of DUB is a single oversized spindle diameter across every shell standard, which is why a Red AXS, Force AXS, or Rival AXS crank drops into this thing without a thought about compatibility charts. The bearings sit outboard of the shell here, pushing them out past the frame so the spindle is fully supported and your pedaling force has a clean path through to the drivetrain. If your frame has a 68mm T47 shell, this is the SRAM-spec match — not the 77mm or 85.5mm variants that handle wider shells with different bearing placement.

SRAM's Gutter Seal Technology is the part that earns its keep over a riding season. It channels water and grit away from the bearing before it can work its way past the seal, which is the difference between a bottom bracket you service once a year and one that's gritty by spring. The bearings themselves are sealed cartridge units, and the steel-spindle DUB system runs noticeably lighter than the older GXP setup it replaced.... Read More