Originally Posted by
rmfnla
Careful there; most road bars have a 26.0 mm clamp diameter whereas flat bars come in 25.6 mm.
Doesn't sound like much but a stem clamp is one of the last things you want to fail...
Moustache bars have a 26.0 clamp diameter. If you need a decent adjustable stem, go for a 31.8 stem with a 26.0 shim. The bars would be where you want them to be.