TunedUp4WD-Mini Round Hole Ball Bearing Set (4pcs.) #15111

**These ball bearings give smooth counter gear rotation for greater efficiency, they feature 2mm holes. Provide Smooth motor rotation**
Compatible Machines
Mini 4WD car high speed (Gear Ratio 4.2:1), High Speed EX (Gear Ratio 3.7:1), Super Speed (Gear Ratio 3.5:1)
***CANNOT BE USED WTIH : Mini 4WD PRO cars***