I`m throwing a new piston into my bike, a 2000 KX5, and I am curious about the lack of a port cut into the piston on the intake side. Does the stock piston have it? The wiseco I have doesn`t have it, neither does the one that`s in the bike. Seems that most every bike I`ve seem apart for the last 20 yrs has that port and I recall seeing a pic somewhere on this site of a piston that had it. Can someone edumacate me on this?
Thanks
Jack