Yesterday just for the heck of it I did some research on this Kawasaki reintroduced head. I emailed Kawasaki and requested some information from them about overseas availability of these and this was the reply I received:
"Thank you for contacting us.
As you mentioned, initial production lot will be 1,000. Plans may arise for further production depending on requested further order quantity.
Currently, sales as Z1's cylinder heads in overseas markets under consideration.
We will make announcement on our official website or SNS when products sales in overseas is decided.
Again, thank you for contacting Kawasaki Heavy Industries, we take your request as valuable opinion.
Wish you have a great day!
Best Regards,
Kawasaki Heavy Industries, Ltd
For further inquiry please contact below:
www.heritage-parts.khi.co.jp/en/ "
As stated $2100.00 is a lot of money to spend on an old bike, but at some point used cylinder heads are going to be rather difficult to obtain. Really nice used heads are already hard to locate and are most often a crap shoot when you order one. I think based on the response from KHI they put their toe in the water and want to see what type of interest is out there regarding remanufacture of parts for these bikes, especially engine parts. In essence, would it be a profitable venture for them. As such, even if you now say you wouldn't spend the $2K on a new head, I think it would be to our benefit to let KHI know you would be interested in purchasing such an item in the future. It only takes a couple of minutes to write them and give some positive feedback in this area. Opportunities like this rarely come along for factory made parts. Imagine for a moment how nice it would be to have the ability of ordering a new cylinder head or block for a restoration project. Quite possibly the price may come down on these items if KHI made a bigger run of them too.
Rick H.