I'm building a big bore KX 500 and just talked to weisco about making me a custom 92mm KX 500 piston. They can do it but will only do a run of 4 pistons for $252 a piece(includes rings, circlips, and wrist pin) or a run of 8 for $208 a piece. These pistons will work with LA Sleeve's big bore KX sleeve(540 sleeve). I was just wondering who might be interested in getting in on some of this action!! It's either this or I have to put a CR 500 rod in my KX, and use a cylinder spacer, and have the head dome cut out 5mm, and ...... ahh you get the point!