Mitsubishi part number help/look up

[herms99gst]

I have here 4 pistons that i believe to be evo 6 pistons. Ive looke myself and have found very little infformation on them. The part number on the box is shown in the picture. Any idea about these pistons? Are they basically just a 2g piston?

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[bryanwheat]

From a google search i found this, the part number listed is for a evo 5 rs and evo 6 rs. Auto Parts mitsubishi- parts directory

 

[herms99gst]

Damn ive looked a few times and thats about what I came up with. I just want to know what material they are made from. Are they a hypereutectic piston, partially forged or a cast.

 

[bryanwheat]

IT looks like a cast piston from the pic. In the area where the wrist pin fits thru you can see some casting marks.