CeramicSpeed BB ALPHA

The BB ALPHA is specifically designed to pair 24mm axle cranks, such as Shimano, with 46mm pressfit shells. If your frame uses a PF30 standard and you are running a 24mm spindle, this is the correct interface.

Yes, it is specifically engineered for gravel. The custom-engineered seals and precision dust covers are designed to handle the grit, moisture, and debris typical of off-road conditions better than standard bearings.

The grade-3 Silicon Nitride ceramic balls offer significantly lower friction than standard steel bearings, which translates to a smoother pedal stroke. Additionally, they are paired with hardened stainless-steel races to ensure the longevity required for demanding riding.

The BB ALPHA features a simplified spacer tube design that makes installation more straightforward than many traditional pressfit systems. While it still requires a standard press tool, the streamlined construction reduces the complexity often associated with bottom bracket swaps.

While the seals provide excellent protection against moisture, it is still a high-performance component. We recommend periodic checks to ensure the seals are clean and free of debris, especially after riding in particularly wet or muddy conditions.