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.For Road and Road Wide. 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. Item Specifications: BB Shell Width (mm), 77, BB/Frame Interface, T47, Bottom Bracket Shell I.D., 47, Defined Color, Black, Spindle Interface Type, SRAM DUB,.
