The Boca Bearing Company have been an industry leader in ceramic bearing technology since 1987. Reducing rolling resistance and conserving energy has been our hallmark. We offer a full line of full ceramic & ceramic hybrid bearings specifically suited to bicycles. Various ABEC tolerances, radial plays, retainer styles and seal/shield configurations are available. To make things easier for you we have compiled bearing kits and listed them according to the manufacturer and model of the bike component that the bearings will fit.