piston clearance question

[rustbucket]

I have a yt 125 yammie and i need to know the piston to cylinder clearence. my piston and cyl are sitting in the shop waiting to get bored this is the last peice i need it will be 40 over stock yammie piston

[TRI Z Racer]

i hade mine 1.5mm over for my tri-z/yz cylinder, the clearence was 2 thousands. if its a wiesco piston it will say on the box the piston came in. if not call a dealer or call wiesco, they are pretty cool people