CeramicSpeed BSA Bottom Bracket

This bottom bracket is designed for frames with a standard BSA English threaded shell, which is 68mm wide with a 34mm diameter. If your frame uses a press-fit system or a different threading standard like Italian, this model will not be compatible.

This unit is specifically engineered for 24mm diameter thru-axle crank spindles. It is compatible with most major brands that use this standard, including Shimano, FSA, and Rotor.

The coated bearings feature a specialized metallic layer applied to the races, which increases hardness and corrosion resistance. This results in a longer service life and even lower frictional drag compared to standard ceramic bearings.

Yes, you will need a standard external bottom bracket tool compatible with the specific cup design to install this properly. While the installation process is straightforward for those familiar with threaded bottom brackets, using a torque wrench is recommended to ensure the cups are seated to the manufacturer's specifications.

CeramicSpeed rates the frictional drag of this set at 0.3 to 0.4 watts. While this is a marginal gain, it represents a measurable reduction in internal resistance compared to standard steel bearings, helping you maintain efficiency over long rides.