www.zxrworld.co.uk

just doin a top end rebuild and noticed one of these is broke(circled in red)
dose anyone know where i can get them from?

They are the cam caps mate and i'm pretty sure you will not get a replacement!! The holes are machined with them in situ, meaning they are engine specific. If you tried a non-match then oil ports and such wouldn't line up.

I think i am right in thinking this anyway...

Yeah your right they are engine specific, not 100% sure on replacemet tho, i have a feeling they are colour matched or something like that so maybe replacement is possible? Having said that, the fiche shows the head and caps all in one 'box' and individually numbered, the only other numbered parts are bolts etc.... So looks as if Jeppo is right, looks like youll be needeing a new head.