The SRAM DUB™ (Durable Unified Bottom Bracket) 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 has 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 standard
Sealed cartridge bearings
Gutter Seal Technology™ drastically improves sealing against the elements
Significantly lighter than GXP® system
DUB is no new bottom bracket shell standard