Bottom bracket SRAM DUB Road BSA 68 mm wide

SRAM DUB bottom brackets connect the crankset and support smooth, long-lasting power transfer. The DUB spindle is designed as a unifying component, with one oversized spindle fitting all bottom bracket specifications. The design supports crank compatibility, protection from the elements and longer service life.

• Gutter Seal Technology helps protect against the elements.
• Significantly lighter than the GXP system.
• Sealed cartridge bearings are available in stainless steel or ceramic.

Technical specifications

• Bottom bracket-to-frame interface: English/BSA 68 mm
• Crank-to-bottom bracket interface: DUB
• Bearing type: standard
• Spindle diameter: DUB
• Chainline (distance from frame center): 55.0 mm
• Cup material: aluminum
• Weight: 76 g

DUB technology

The relationship between the bottom bracket spindle and bearings is at the core of DUB technology, combining stiffness with durability. Its simplified design improves integration between the chainring, crankset, spindle and bottom bracket. This approach to creating a complete system supports improved drivetrain performance.