I had this exact conversation with the powder coated guy(very large operation) and he said it just depends. My final choice was to not powder coat the head or cylinder. I don’t think it’d hurt a dang thing but it could hold a couple more degrees.
The main issue is this.
On a strictly air cooled 2 stroke like most any of us are running you Produce to much heat, apparently powder coat begins to break down(maybe get soft) at 300 degrees. There is some high heat stuff out there in black.
We talked about this for a while because I was going to go all the way with it but figured I’d ask I’m first and sure enough.