Tripeak BB86 Twist Fit Bottom Bracket, Ceramic, ShimanoFeatures A well made ceramic bearing will roll faster, saving you energy and allowing faster cruising speeds compared to an equivalent steel bearing. Ceramic bearings are more corrosion resistant, harder, and last longer in everyday use. Ceramic balls have an exceptional ability to retain their true spherical shape under load. This creates the conditions for ceramic equipped components to have an exceptionally long and smooth running life. A good