Tokyo, March,1, 2019 — Kawasaki Heavy Industries, Ltd. announce today that it will start reproducing cylinder heads for the 900 Super Four/Z1 (hereinafter referred to as "Z1"), which was introduced in 1972 and went on to solidify Kawasaki’s position as a global leader in the large-displacement bike category, as well as for the 750RS/Z2 (hereinafter referred to as "Z2"), a Japanese-market version of the Z1, to cater to fans of these historic models around the world. The company will establish a dedicated online sales website in mid 2019 to take customer orders.

Sales of Kawasaki’s 900 Super Four/Z1 (“Z1”) commenced in 1972, with the Japanese domestic market 750RS/Z2 (“Z2”) following the next year. Both models were instantly popular from the time of their debut, together selling well over 120,000 units worldwide. They are historic models that have come to be recognised as symbols of Kawasaki motorcycles.


As they near their 50-year anniversary, these long-popular classic models remain loved and admired by many riders. Numerous Z1s and Z2s, restored to beautiful working condition, can be found around the world today. In order to meet the needs of Z1 and Z2 owners and support their lifestyle as motorcycle riders, Kawasaki Heavy Industries, Ltd. (KHI) has decided to reproduce the cylinder heads for these very important models.

KHI will reproduce the cylinder heads using current methods based on original part design plans and specifications.

Furthermore, KHI will examine the possibilities of reproducing parts other than the cylinder heads, as well as out-of-stock parts of other historical models, taking into account customer feedback on this reproduction project.


Part Composition (includes the parts below)
  • Camshaft brackets
  • Valves and peripheral parts
  • Tappets
  • * Not intended to be an exact copy of the original, including the shape and surface quality, based on production standards at the time.
  • * Does not include camshafts, a cylinder head cover, gaskets, etc.
  • * Features M8 exhaust-pipe-attachment stud bolt dimensions from later models.
  • * Does not fit on the Kawasaki KZ1000 MKII and other so-called "square head" models, which feature a second-generation square cylinder head cover that is slightly thicker.
Compatible Models
Compatibility Chart (PDF)
How to Purchase
A dedicated online sales website will be established (planned for mid 2019) to take customer orders, with actual sales scheduled to begin in 2020.

  • Not available for purchase through any Kawasaki Dealership, all enquiries from our Australian customers should be forwarded to the below website.
Previous: « Next: »