Complete musical organization of high-speed, blue rubber-covered ball bearings for XB9 are used through the drivetrain for optimum effectiveness. All ball-bearings obtain the absolute best limit and offers maximum performance. Ball-bearings the steering system are degreased and incredibly carefully oiled with Aero Shell® Fluid 12 for maximum smoothness and longevity. All drivetrain ball-bearings have in fact an actual high-temperature resistant oil to be sure proper lubrication. Highest-quality, separately determined, plumped for and inspected bearings produced centered on XRAYs best limit demands. Level of 24.