The new SRAM DUBbottom 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, weve engineered the DUBspindle 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.Specifications for DUBBottom BracketsMaterial: Aluminum, Steel (PressFit)Weight: 76g (BSA), 71g (PF92), 82g (BB30), 89g (PF30)Compatibility: DUBbottom brackets fit all frame shell standardsThe relationship between bottom bracket spindle and bearing is the core of DUBtechnology. Its where stiffness meets durability. We took it a step beyond conventional thinking and made everything simplerand better integrating the relationship between chainring, crank, spindle and bottom bracket. Its this c