The SRAM DUB bottom bracket series has a simple jobto 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.

– Compatible with Cannondale Ai frames
– Gutter Seal Technology drastically improves sealing against the elements
– Sealed cartridge bearings
– One oversized spindle to work across every bottom bracket standard