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The SRAM DUB Bottom Bracket interface is the single, unified replacement for 30mm and 24mm crank spindle systems. The DUB system uses 28.99mm crankset spindle/inner bearing diameter and reaps the benefits of BB30 lightweight bearings and strong crank spindle with the advantage of the 24mm bottom bracket systems durability.
The precise bottom bracket, spindle and bearing engagement is the foundation of DUB technology. This superb merger creates the ultimate in stiffness, reliability and performance without sacrificing weight. SRAM have set a new standard for drivetrain performance, adjustability and reliability by creating a system that is not complicated to set up and fine-tune; meaning everyone can have the highest levels of performance, without the need to spend hours in the workshop/garage.
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