Karl already answered your question....pinitwot wrote:well i would have to get one of thoes sizes.
go to the link that 91 KDX 200 posted you will see what i am talking about
The CC sizes listed are for the different available 'oversize' Wiseco pistons. As noted...'oversize' or not, the pin bearing is the same.
Repeat: You do not bore a KDX cylinder to an 'oversize' as a general maintenance/repair process. If the cylinder is bored to ANY size, it must be replated (or sleeved). The aluminum of the cylinder will NOT work as a combustion/piston-contact surface.
A bore/replate process is something done at only a few places and it is relatively expensive. During normal use of your bike, it will be required seldom unless there has been damage done to the plating surface (by intake of dirty air or some physical failure of an internal part for example).
All set?