31-0005 92-99 crankcase assembly, STD bore. Natural

If you are building a high-performance Evolution engine or replacing a cracked factory case, this S&S Superstock crankcase assembly is the gold standard. These cases are cast from 356-T6 aluminum, making them significantly stronger than original equipment. They come ready for the engine builder, with Timken main bearing races and cam needle bearings already installed, plus the pinion shaft race is pressed in and line-honed. Designed for 1992 to 1999 Evolution Big Twin models, this set includes cylinder studs, nickel-plated bolts, and all necessary fittings. It replaces OEM number 26053-92 and is clearanced for strokes up to 5 inches, making it a versatile foundation for everything from stock rebuilds to serious racing applications. This assembly is sold as a set.