SRAM DUB PressFit Bottom Bracket – BB89.5/BB92 89/92mm MTB Boost 55mm CL Black. The SRAM DUB bottom bracket series has a simple job to connect crankarms and protect the smooth long-lasting application of power to the drivetrain. SRAM engineered the oversized DUB spindle to work across every bottom bracket standard simplifying crankarm compatibility.

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