Hot Rods Plain Bearing - Crankshafts. Hot Rods Plain Bearing - Crankshafts feature bi-metallic alloy plated bearings with SAE49 bearing material backed with SAE1010 steel for high strength performance. All O.E.M. color offerings match O.E.M. specifications. SAE49 bearing material backed with SAE1010 steel. All O.E.M. color offerings to match O.E.M. specifications. Bi-metallic alloy plated bearings. Detailed Specifications: Color: Yellow.