125-200cc 165 broken powervalve

Soooo, how do I go about getting a new one? (bought the kit second hand)




May need a new piston as well since the valve was rubbing on it. Need to pull the top end off and see how it looks


Won't hear the end of this from riding buddies I'm sure. I had my TXC with me so the weekend wasn't a total loss but I have the next round of the hare scramble series I'm running in this weekend and the TXC isn't legal for my class. I guess if nothing else is wrong (thought the trans was making a knocking noise too) I can put the 144 top end back on it.