New boy

[Sandblaster]

"Noo,I meant is it a pro circuit barrel "

That's what I was commenting on. I have no idea if someone worked on it... all I can tell you is that it is either a 86 or 87 KX500 cylinder or barrel..
As far as I know nobody made any after market cylinders.
Kawasaki made some SR500 cylinders but yours is not one of them

[Kx500ukbeast]

Sorry.....we got there tho,so no after market pots were produced,and here's me been told that pot is worth £1500,phone call to made now,Cheers again