SRAM DUB BB121 Bottom Bracket

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.

- Gutter Seal Technology drastically improves sealing against the elements
- Sealed cartridge bearings
- One oversized spindle to work across every bottom bracket standard