Wheels Manufacturing BB30A Bottom Bracket

This unit is specifically designed for frames using the BB30A standard, which features a 42mm shell diameter and a 73mm shell width. Please verify your frame's bottom bracket standard before purchasing, as BB30A is distinct from standard BB30.

The threaded design allows the two cups to lock together, which creates a more stable interface within your frame. This significantly reduces the likelihood of the creaking often associated with press-fit systems and simplifies the installation and removal process.

Yes, the bearings are fully serviceable. Because the cups are threaded and removable, you can easily replace the Enduro ABEC-3 bearings when they eventually wear out, rather than needing to replace the entire bottom bracket assembly.

You will need a bottom bracket tool with a 44mm x 16 notch interface to install and tighten the cups. This is a common standard, so many standard external bottom bracket wrenches will work.

This bottom bracket includes silicone dust shields designed to seal the bearings against contaminants like dirt, grit, and water. While it is water-resistant, regular maintenance is still recommended if you frequently ride in harsh, wet conditions.