Special 25mm ID bearings with custom 6mm Width

Includes two (2) exact replacement ceramic hybrid outboard cartridge bearings. Grade 3 ceramic balls are matched with hardened chromium steel races that are cryogenically treated and polished to get the most out of the ceramic balls. Includes Magnetite anti-corrosion bearing race treatment and double-lipped non-contact silicone seals for near "zero" friction. Packed with top-quality grease.