CeramicSpeed 61903 Standard Bearing - (6903) Features-STRL/SPDGRP/TR Bearing race material is AISI

Bearing race material is AISI 52100 chrome bearing steel hardened to Rc 60-65

compatible with SHIMANO SPD cleats (sold separately)

Dimensions: 146mm x 20mm x 8mm

Model City Street Size 26" Width 1

CeramicSpeed 61903 Standard Bearing - (6903) Features-STRL/SPDGRP/TR Bearing race material is AISICeramicSpeed cartridge bearings are an upgrade option for any cycling discipline. These bearings provide extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings. Grade 3 Silicon Nitride balls Hardened steel races Reinforced polymide cage and non contact seal to keep dirt and moisture out High resistance to poor lubrication Can be used for any cycling discipline Sold as each Hand built in Denmark