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
Significantly lighter than GXP system
PressFit 121 (Fat Bike)