Complete band of high-speed, blue rubber-covered ball bearings for XB9 are employed through the drivetrain for optimum effectiveness. All ball-bearings have the best threshold and provides maximum performance. Ball-bearings the steering system are degreased and gently oiled with Aero Shell® Fluid 12 for optimum smoothness and long life. All drivetrain ball-bearings have an original high-temperature resistant oil to make sure proper lubrication. Highest-quality, separately calculated, selected and inspected bearings produced predicated on XRAYs highest tolerance needs. Number of 24.