Whitz Racing Products Team Associated B6 HyperGlide Bearings - Gearbox Kit, WRP-AEB6-HGGB This is a Whitz Racing Products Hyperglide B6 Gearbox Full Ceramic Bearing Kit, a pack of high performance ceramic and stainless steel bearings that are compatible with the Team Associated B6 Gearbox kits. This full kit includes all bearings except steering bearings, and makes for an ideal choice for upgrading your vehicle, or replacements for maintenance. High-Performance Hybrid Ceramic Bearings Features:Increased Drivetrain RollLower FrictionCooler TempsABEC-5 RatingSi3N4 Ceramic BallsStainless Steel Sizes:(2) 10x15x4(4) 5x10x4 Compatibility:Team Associated B6DTeam Associated B6Team Associated B6.1Team Associated B6.1D We recommend every few track days to check for any necessary maintenance needs. If the bearings feel gritty or have reduced roll, remove bearings and clean with a citrus-based degreaser & lightly oil with a premium high temperature lube/oil like our TDK Bearing Oil. Car brake parts cleaner will ruin your bearings and is NOT recommended.