sram dub english/bsa 73mm cannondale ai bottom bracket in black

Singular focus. Better solution.The new SRAM Dub™ bottom bracket series has a simple job-connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, SRAM have engineered the Dub™ spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket standard. For better crankarm compatibility. For better protection from the elements. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride.Features:One oversized spindle to work across every bottom bracket standardGutter seal technology™ drastically improves sealing against the elementsSignificantly lighter than gxp® systemSealed cartridge bearingsISO 4210 compliant. See declaration of conformity for details.BB-frame interface: english/bsa 73mmCrank-BB interface: dubBearing type: standardSpindle diameter: DubSpindle length: n/aChainline: n/aSupport E-type FD: n/aCup material: aluminum