Given the HP level on spray, I'm surprised the pistons didn't have all those machined corners blended & radiused before being coated.
There are no sharp edges on the Pistons, they did slightly radius them but they could have been a little more aggressive.
Here is a picture of the nitrous softening Bucks did to the chambers. (I have to go and touch them up because we had to surface them for a small scratch from when we machines the pads down for the T&D rockers.)
