I'm doing a little restoration on the 87 KX 500 and was wondering how a new style PWK carb would work in place of the old Mikuni. Also wondering if anybody knows where I can get a quality aftermarket piston & ring set to replace the weak stock one. I've checked Weiseco, Pro-x, Vortex.
Nothing available, unless you have them special made at a minimum of 25 pistons.