#930220 Ceramic Ball 2.4mm (12)     
#930230 Ceramic Ball 3.175mm (12)

• Set of 12 premium-quality ceramic balls
• Extra-hard Si₃N₄ silicone nitride ceramic
• Significant improvement of differential lifespan
• Reduces friction & vibration
• Higher RPM capabilities

Set of 12 premium-quality ceramic balls made from extra-hard Si₃N₄ silicone nitride ceramic. Significantly improves differential lifespan while reducing friction and vibration. Higher RPM capabilities.

High-speed ceramic diff balls have very high durability (when properly lubricated) due to reduced slip and heat. With ceramic being approximately 60% lighter than steel, ceramic diff balls have a significantly lower rotating mass.  Together this means that the lifespan of ceramic diff balls is 3-5 times longer than that of steel diff balls under matching conditions.  Ceramic diff balls have vastly-superior corrosion resistance over steel diff balls, and with an inherent low-friction coefficient and smooth surface, frictional forces on ceramic diff balls are much lower.