STAINLESS STEEL BEARINGS

This is a Stainless Steel Bearing upgrade for the Thunder Tiger Pro .40 motor used in AMA 424 Q-500 class. For performance and reliability, we highly recommend these rear bearings to replace the stock metal cage unit. These bearings has proven very reliable and does not blow apart with the increased RPM seen in racing application. Bearings fits TT Pro 40-46, Magnum Pro 40-46 SE, XLS and O.S. 40-55FX, SX, AX.