These 1939-53 flathead stroker kit rotating assemblies feature new Scat crankshafts, new Scat H-beam connecting rods with 2" journals, Ross forged three-ring pistons, rod bearings, and piston rings. The components are balanced and ready for you to assemble.
Main bearings sold separately. If you have a '39-'48 engine you will need a set of 9101535-STD main bearings. A '49-'53 engine will require a set of 9101536-STD main bearings.