What KZ front brake rotors are these?

So I've searched the Googles, online stores, this amazing forum, and have had no luck in figuring out where these rotors are from!

OD 285mm
ID 144mm

They mount via 7 bolts, which I thought meant they were KZ1300, and eliminated them being KZ750... but at this stage really have no idea.

I need to replace them as the final step to get my KZ650 on the road... any help in identifying them, or suggestions on how to, would be amazing!

Are these vintage Kawasaki brake rotors & were they on the motorcycle?
A pic might help & they may have the minimum thickness marked on them.
Most 1981-on rotors & some from 1980 are 7-bolt. From the measurements I've found, the 550 & 750-4 rotors are smaller in diameter, and the 440s are probably smaller as well. An EBC KZ1300 rotor on EB is listed as 299mm. I tried the EBC USA catalog to see if there's a 285mm rotor for any Kawasaki, but I didn't see anything. The EBC UK /International catalog doesn't seem to work.

Sorry yes I thought I had attached photos originally. I’ll try again now.

They were on the bike, but are undersize now to pass our roadworthy here. Sourcing replacements is proving to be incredibly difficult.

No eBay APP ID and/or Cert ID defined in Kunena configurationYou might need to post a pic of the wheel. The only model I can think of is maybe the KZ1000E Shaft. I'm no expert, but I don't recall ever seeing a KZ brake rotor like that. The center part with the 7 bolt holes is riveted to the disk. The KZ rotors I've seen that are similar only have 4 bolt holes.

Edit:
From Partzilla for the 1980 KZ1000-E2 Shaft. DISC PLATE,FRONT 41080-1026
EB search = KZ1000 shaft brake rotor. other search terms: KZ1000 ST. KZ1000E. KZ1000E1 or E2. brake disk.

Another one: item #233044365845

You sure that's a Kawasaki rotor? As mentioned never seen one like that on a Kawasaki.

This is the front end of the bike... 19" rim on 36mm forks.

Martin, thank you so much for looking into that so deeply for me! I contacted that place and asked for dimensions; it looks like they match. The OD matches, and the ID is within 5mm, so it could just be different measuring between Mr eBay and myself.
I've pulled the trigger anyway. I'll find out in 3wks once they arrive here down under. Fingers crossed!


The most frustrating thing is, I'll have these brakes on the KZ for a few days for the inspection. And as soon as it passes and gets road-registered, she goes back into the garage...

I'll be grafting a '09 ZX6R front end that I have, a matching ER650 rear rim onto a ZR550 swing-arm. Then an 810 Wiseco kit paired with an RS34!
Fun times ahead!

This was a weird one. never saw a disk like that & Partzilla didn't have a diagram drawing of the front brake.
The EB pics from a couple of other 1000E shaft disks also look the same to me.
In the mean time you could also compare the wheel size n stuff to 1000E pics on EB.