SRAM DUB Bottom Bracket Press Fit PF89/PF92The 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. PressFit 89 92 Gutter Seal Technology drastically improves sealing against the elements Sealed cartridge bearings One oversized spindle to work across every bottom bracket standard