The Sram DUB Pressfit 30 Bottom Bracket 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. Sram DUB Pressfit 30 Bottom Bracket Features Greater bearing durability Easy installation Press fit cups for lighter weight Integrated adjuster Iso 4210 compliant. See declaration of conformity for details Sram DUB Pressfit 30 Bottom Bracket Specifications BB-frame interface: pf30 (68-73mm) Crank-bb interface: dub Bearing type: standard Spindle diameter: dub Spindle length: n/a Chain line: n/a Support e-type fd: n/a Cup material: aluminium