Brand: Harley-Davidson
Model: XA
Years: 1942–1943
Engine: 45 cu in (740 cc) flat-twin
Notes: Tactical motorcycle for desert warfare. Based heavily on and retro-engineered from BMW R71 design. Flat-twin engine with a longitudinal crankshaft, a gearshift pedal, shaft drive, and plunger rear suspension. Approximately 1000 produced for testing. Not used in combat nor ordered in volume.
Source: Wikipedia