CeramicSpeed 15267 Coated Bearing - Coated Bearing RaceCeramicSpeed 15267 Coated Bearing Coated Bearing Race. CeramicSpeed cartridge bearings with coated race are a premium upgrade option that provide extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings. These bearings feature coated races that provide the ultimate performance and longevity. Grade 3 Silicon Nitride balls The coated bearing races increase the bearing service life by providing extreme