Zero Ceramic 6902 Sealed Cartridge Bearing

Enduro Zero Ceramic bearings are the ultimate race day weapon. Oversized Grade 3 balls roll on races which are ground to a mirror finish after receiving Magnetite and then Cryogenic treatments for hardness and longevity, and slippery Silicone seals to produce minimum resistance. These bearings have a 15mm Inner Diameter, a 28mm Outer Diameter, and are 7mm thick.