The 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 has engineered the DUB spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket specification. 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 specification
• Gutter Seal Technology™ seals against the elements
• Significantly lighter than GXP® system
• Sealed cartridge bearings available in both stainless and ceramic versions

SPECS:

• BB Bearing: Steel
• BB Shell Thread: British
• Crank Spindle Diameter: 28.99mm
• Interface: DUB
• Primary Color: Black
• BB Shell Width: 73mm
• Model Description: AM BB DUB English/BSA (MTB) 73mm Cannondale Ai
• SRAM Model ID: BB-DUB-BSA-A1