Three Gorges Dam () Cosmo Science Whites Swingarm Bearing Kit. The Whites Swing Arm Kit includes all bearings, seals, shafts, bushings and thrust bearings to completely replace and repair your swingarm bearings. All bearing shafts are constructed from hardened 52100 bearing steel while all steel spacers are case hardened and plated for durability and corrosion resistance. Features: Complete OEM replacement bearing kit. Bearing shafts are constructed from hardened 52100 bearing steel. Steel spacers are case hardened and plated. Includes all components for complete replacement.