What a little beauty! The engine and drivetrain a copy of BMW..The Styling strictly American. The first production foot shift/hand clutch for Harley. A 45 cid machine. However, the 45 V-Twin would last as long as this one and could outrun the XA.. It’s hard to get people to admit the truth.. In the end, this design was abandoned. The 45 V-Twin was cheaper, faster and lasted forever.