Is this they type you're looking at? https://www.ebay.com/itm/Cylinder-Piston-Rings-Kit-for-196CM3-Bore-200cc-Honda-ATC-200-XL185-XL200/402316275310?hash=item5dabeb2e6e:g:cu4AAOSwkflfAR-s
I've been wanting to try one of those. Nobody has posted on any site I know of about the outcome of using one.
They obviously have a provision for an external camchain adjuster. That'd have to be blocked off or the OEM one removed and an external one installed, if possible.
Another thing I've noticed is there are two variations. One has seven cooling fins and the other, eight. I think the eight fin ones are for the 230cc engine styles, like CRF230. They have taller cylinders.
It's an unknown. If you're willing to risk it, then post the results. Otherwise, having the stock cylinder bored is a better option.
I think those are actually 180cc, or for a '185,' if they'r actually 65.5mm diameter. It's a Chinese copy of something, so I wouldn't put much stock in the cc it says it's for.