S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Softail 2018up

Description

These cases are designed to accept cylinders up to 4 1-2in., which is massive, & they have a case with a spigot bore of 4.695in.

The demand for performance-based Softail parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting in a stock Softail frame.