At Kogel Bearings, they believe ceramic bearings set the gold standard for bottom brackets, derailleur pulleys and wheel bearings. The ceramic material used, Silicon Nitride, is hard and wear resistant, and will not rust or oxidize. It can be precision machined into perfectly round balls with super tight tolerances and polished smoother than any metal, making it perfect for bicycle bearings.
Ceramic bearings provide optimum drivetrain efficiency.
Precision machined components ensure a smooth, squeak-free ride.
Bomb-proof, all-weather seals to keep you riding no matter what.