- Oct 4, 2003
i have a 97yz125 on its stock top end, it runs great and has good compression. I found a deal on a piston kit w/ everything but the wristpin bearing. its for the stock bore, and dosnt have much time left on the auction. If my bike is running good now how much of a risk is it to get the std piston before i take it apart? Like if it still runs good now is there any possibility that my cylinder is out of spec? Wait, its plated. If it was out of spec id be screwed anyhow right? Like i would need a replate so the stock size piston would work no matter what?