SRAM BB DUB T47 (Road Wide) 85.5mm (including 2.5, 5.5 DUB spacer)The SRAM DUB bottom bracket series has a simple jobconnect your crankarms and protect the smooth, long lasting application of power to your drivetrain. To allow that singular focus, we've engineered the DUB spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket specification. For better crankarm compatibility. For better protection from the elements. For longer lasting performance. To be stronger,