The SRAM DUB bottom bracket connects the crankset and provides smooth, long-lasting power transfer to the drivetrain. The DUB spindle is designed as a unifying component: one spindle size fits all bottom bracket specifications. This design improves crankset compatibility and protection from the elements, and supports longer service life. The construction is strong, smooth and simple.
One oversized spindle fits all bottom bracket specifications.
Sealed cartridge bearings are available in stainless steel or ceramic.
DUB technology is based on the relationship between the bottom bracket spindle and the bearings, combining stiffness with durability. The system has been simplified to provide better integration between the chainring, crankset, spindle and bottom bracket. This approach to designing a complete system helps improve drivetrain performance.
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