The SRAM DUB bottom bracket series seamlessly connects crankarms, ensuring a smooth, durable power transfer to the drivetrain. Engineered with an oversized DUB spindle compatible with all bottom bracket standards, it simplifies crankarm compatibility. Specifically crafted for SRAM Boost cranksets with 55mm chainlines, featuring Gutter Seal Technology for enhanced weather sealing and sealed cartridge bearings. Experience the convenience of one oversized spindle, offering compatibility across various bottom bracket standards. Includes 3.0, 5.0, 7.5 DUB spacer and 2.5 aluminum inner spacer.