Complex sentence: Kawasaki introduced its first cruiser and first V-twin engine worldwide in 1984 with the Vulcan 750, however, due to tariff restrictions in the United States on imported Japanese bikes over 750 cc, the initial US spec model was limited to 699 cc.
Split into simpler sentences: Kawasaki introduced its first cruiser and first V-twin engine worldwide in 1984 with the Vulcan 750. However, due to tariff restrictions in the United States on imported Japanese bikes over 750 cc, the initial US spec model was limited to 699 cc.