The cups come with bearings installed and a sleeve is included to further seal the system from the elements and from rubbing on internal cables.

The Standard Bearings have only 0.3-.04 watts of frictional drag per set, an average drag reduction of 75% compared to stock bottom brackets. This is the result of superior design including hardened-steel races, and ceramic balls that are 100% smoother and 15% harder than the ceramic competition. They also last 3x longer.

Coated Bearings last even longer and feature even lower drag. Life is boosted by 60% and drag plummets by 50% compared to our Standard.

All Round Grease is used in the bearings. It can be replaced for lower drag Race Day Grease, or higher durability Long Life Grease, which adds a bit of drag but stays in when riding through messy conditions.