1971 Yankee Z
Founded in Schenectady, New York by the Yankee Motor Company this bike had an air-cooled, 2-stroke engine configuration. Designed and produced by Eduard Gir and Ossa Manufacturing. Ossa Manufacturing was situated in Barcelona, Spain at the time. However, a few of the components were made and put together in the US.

1971 Yankee Z
1977 Kawasaki KZ1000
This model was released in 1977 and considered one of the fastest production bikes. The Kawasaki KZ1000 was equipped with an in-line-4-cylinder nine that was configured and paired with a 5-speed transmission that gave off an estimated 90 horsepower. Kawasaki at the time was already at work on what was to follow in this models footsteps.

1977 Kawasaki KZ1000