Crankcase
Revision as of 20:31, 26 November 2010 by Addicted2speed (talk | contribs)
External housing for the crankshaft.
Vertically split
Vertical crankcases are crankcases that are split vertically.
Horizontally split
Horizontally split crankcases were a major innovation when they were first introduced. They caused the bikes that featured them to be FAR less prone to oil leaks.