MK Series Crankcase 4-1/2" - FLT M8 17-Up - Black For Harley-Davidson

The demand for performance-based parts is growing, and these M8 engines are generating more power every day. All that power requires a quality foundation that stock crankcases can't provide.
This new version of the MK series crankcases is ready for even more than the originals!
These crankcases are designed to accept cylinders up to 4 1/2”, which is huge!
Just like the originals, these pans scrape more oil than stock pans and offer greater reliability, all without chassis modifications.
Features and benefits:
Standard platform height
Machined and fitted oil scraper (the stock one is as cast)
Large volume crankcase
Redesigned with a 4.695” spigot bore to accept larger diameter cylinders
S&S CYCLE 310-1341