The Z1 Kawasaki was a motorcycle introduced in 1972 by Kawasaki Heavy Industries. It has sometimes been described as the world''s first superbike. The Z1, along with Honda''s CB750 from 1969, introduced the four-cylinder, across the frame, disc-braked layout to a wider public. The Z1 was groundbreaking in that it combined many different elements which previous motorcycles had used into one performance package. The Z1 Kawasaki was developed in strict secrecy under the project name "New York Steak". Some years previously, Kawasaki, already an established manufacturer of two-stroke motorcycles, decided to make a 750cc 4-cylinder 4-stroke sports motorcycle; they were beaten to the market place by the Honda CB750. Apparently, the bosses at Kawasaki disapproved and ordered their designers to come up with something better. The bike you see here is a ''73 Z1 900 that is in beautiful condition. We have the original retail buyers order and agreement that shows the bike was originally purchased June 18th, 1974 from Strathroy Small Engine. The bike retains its original engine (Z1E08169) as shown on the original bill of sale. The original paint on the bike is in near perfect condition with no imperfections to note. The emblems are all original and correct for the bike as well. Both stainless steel fenders look great with no damage or pitting showing to either. The seat looks great with no rips, tears or wear. The original 4 cylinder, 900 cc engine runs great and starts up with a push of the button. The bike is a rocket on the road and a blast to drive. Brakes work as they should and the bike shifts with no problems. The motor is very clean with no scrapes to either side. The exhaust has some minor pitting as you can see in the photos. VIN number is Z1F07973.