No, they don't. Kawasaki usta sell a standard ring set and .5 and 1mm over ring sets. No longer available. Someone once claimed that they had found a ring set that could be used in place of the OEM, but it was vaporware.
You say that the bore and piston look good. I will be branded as an Astro-van mechanic of the worst order for saying this, but consider cleaning things up and running it. All you have to lose is some time and a head and base gasket. Your alternative is to spend a few hundred on a big-bore kit. If you put it together and it is horrible and depressing, take it back apart and put a 685 in it. Of course, use your best shade-tree mechanic practices to ensure cleanliness and proper fitment during this dangerous, foolish, and ill-advised activity.
Great Info. Thank you!
After Letting the CA engine oil soak last night, I'm able to smoothly transition though 1-3 gears, but it SOLIDLY sticks and does not want to do into 4th. I'll keep working at it.
There is a "Smidge" of surface discoloration inside as if it COULD have started to rust in some areas... But I'm in agreement with you. I'm probably going to go with the "easy" route first.
IF I can get this thing to go into 4th on the table, I'll just button it up with the original piston and rings (AS IS) and just enjoy it for a while. Unfortunately only got 80psi out of the compression test before removal of the top end, but Im Chalking that up to the Kacr doing it's job. I'll to the tube hold open thing later.
Any suggestions on getting this beast into 4th? (I have the inner clutch basket on its shaft, spinning it counter clockwise while working the shifter)