BB30-73a DUB

The Bikone DCTech BB30-73a asymmetric bottom bracket with steel bearings and SRAM DUB compatibility is designed to deliver precise, quiet, and durable power transfer on road frames with the BB30a standard. It's ideal for demanding cyclists seeking optimal performance, whether in competition or on long, intense rides.

Thanks to Dual Cup Technology (DC Tech), the two aluminum cups create a perfectly aligned assembly, eliminating play, creaking, and loss of efficiency. Combined with high-precision Chronium steel bearings, this bottom bracket ensures smooth and consistent rotation, even under heavy load.