sram dub bb30 bottom bracket 42mm x 68/73mm

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 BB30 73mm