Just as Kawasaki was about to green-light the world’s first mass-produced across-the-frame four-cylinder motorcycle, Honda pulled the rug out from under the project by unveiling the CB750-4 at the Tokyo Show in 1968, and lighting the fuse for what was to become motorcycling’s most explosive decade.In never before published interviews with the men responsible for the bike, code-named ‘New York Steak,’ Dave Sheehan relates the story behind the Z1’s development; the secret US testing programme in which a team, including Imola-race winner Paul Smart, rode pre-production bikes disguised as Hondas coast-to-coast across America. The Kawasaki Z1 Story examines the myth, truth and legend surrounding the Z1’s first race win – of which even Kawasaki knew nothing.Here, too, is the full story of the epic three days at Florida’s legendary Daytona Speedway when a trio of Z1s broke more than 50 speed endurance records.