On a word,.yes.
I own 5 1 1/4 headset bikes, 2 are OEM, the funk has a club roost I beam cos I bought it back in the day when 1 1/4" quill stems were still a thing, my Ali elite have a syncros stem, can't remember if it's 1" or 1 1/8", bit it does have a Shim in it. Ozone isn't built up, I'll be...