M44 Piston Size

invalid@example.com (Palmetto), Palmetto
Mon, 29 Dec 2025 12:48:44 +0000

We've taken the head off an M44 that came out of the Z3. I an see the 84.985 piston size but what are the other markings? Is it a +20 piston or standard size? I can't measure it as the head is back on now....