This SRAM DUB goes beyond conventional thinking to create a better relationship between the chainring, crank, spindle and bottom bracket. SRAM has managed to engineer the perfect balance between stiffness and durability. This replacement fits all frame shell standards. Key Features: - English BSA thread, 68/73mm- Gutter Seal Technology drastically improves sealing against the elements- Sealed cartridge bearings- One oversized spindle to work across every bottom bracket standard- Significantly lighter than GXP system

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