How to I.D. a Wiseco piston size?

[Erics350x]

Like the title say's how can i tell from the numbers what size it is? I know its a atc200 12:1

[mdunn]

Not tying to be a wise guy at all, but can you measure it? If you now the P/N, I guess you can go to the wiseco web site and see what it is....

[Dirtcrasher]

If there are numbers on the top, I either did a search or used a Dennis Kirk catalog to tell me what the compression and the bore size were.

[atctim]

wiseco's webpage - cross reference with the number on the top of the piston - if it came out of a running machine - hit it with a wire wheel on a drill.

http://www.wiseco.com/Catalogs/Powersports/HondaATV.pdf

scroll to page 2