Wheels Manufacturing BB30A Bottom Bracket

This bottom bracket is specifically designed for frames using the BB30A standard, which features a 73mm shell width and 42mm diameter. It is not compatible with standard BB30 or PF30 frames, so verify your frame's specific bottom bracket shell standard before purchasing.

Yes, this bottom bracket is engineered to adapt standard 24mm spindle cranksets, such as Shimano Hollowtech II, to fit into a BB30A frame shell.

The threaded design allows the two cups to lock together securely, which ensures precise bearing alignment and eliminates the micro-movements that typically cause creaking in press-fit systems.

Yes, the unit uses high-quality Enduro angular contact bearings that are fully replaceable. This design extends the lifespan of the bottom bracket shell itself, as you can swap out worn bearings without needing to replace the entire assembly.

You will need a standard 44mm x 16-notch bottom bracket tool to install the cups. Because the cups thread together, you will also need a second wrench or tool to hold the opposite side while tightening.