[KevA]

Injectors were never available for the ZX1200A (ZX12R) If you had an issue with an Injector it was new Throttle Bodies..

I use THESE Guys whenever I need Injectors cleaning/Testing and they always come back with new 'O'Rings in with them, Might be worth a E-Mail to see if they can supply you a set of 4, Be aware they are closed for Christmas so you will need to wait, Drop in your E-Mail Address (Box on the page I linked) you might get lucky.

 

[KevA]

Digging around has results that say the ZX12R 2000 is fitted with DENSO 195500-3830 Injectors.
Google that and you will see results amoung them Toyota Cars.

 

[KevA]

Update: internet search by the part number for the injector led me to mrinjectoruk.co.uk who sells a kit specifically for the ZX12R A 1H. Priced pretty right too, so I've ordered them and hope to be on track soon. Thanks again!

You obviously missed my Link in Post #6

 

[KevA]

Not only are we going through various sectors going on strike for more pay /better working conditions including Royal Mail,They get hit with a Cyber Attack ffs.
Hope you get your Injectors sorted asap