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, we've 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.


DUB - The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. We took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance. 


One oversized spindle to work across every bottom bracket standard
Gutter Seal Technology drastically improves sealing against the elements
Significantly lighter than GXP system
Sealed cartridge bearings


BB-Frame Interface English/BSA 73mm, English/BSA 68mm, English/BSA 100mm, English/BSA 83mm, English/BSA 83-A
Crank-BB Interface DUB
Bearing Type Standard
Spindle Diameter DUB
Cup Material Aluminium
Ride Configuration MTB Ai, DH, Fatbike, Multiple, Road Wide, Superboost+, Superboost+ Guide
Frame Shell Width 73, 83, 100, 68, 68/73

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