This is an optional F5-10 5x10x4mm Ceramic Axial Thrust Bearing, and is intended for use with the XRAY NT1 family of vehicles. This high-precision axial thrust bearing features the highest quality materials and design guarantees the smoothest diff operation and increased life. Ceramic balls in the axial cage are made from extra-hard Si3N4 silicone nitride ceramic material, which significantly improves differential lifespan, increases RPM capabilities, while reducing friction and vibration.
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