S&S MK-series B crankcase Softail 18-UP

Milwaukee Eight engines are creating more power daily. All that power requires a quality base that the stock cases can not provide. These S&S crankcases are designed to allow larger bore sizes, scrape more oil, and offer more reliability and still fit into the stock chassis. Cases come with installed cylinder studs and crankshaft bearings and come with crankcase bolts and S&S High Performance piston cooling jets.