lemme guess, you want it that narrow for performing sideways bunny hops into ******clamationpoints? (aka rear wheel skids on fixies)

you don't need anything this narrow. if you a real person, the stated figures are far narrower than your actual chest width. this is bull****.

if you want to make a fashion statement, take an old mountain bar and use a hacksaw to cut it off to just hand width beyond the stem. you will look like an asshat and it will handle like crap, but at least you will look cool. oh wait, no you won't.

if you want to go fast, get a bike, that fits properly, with gears, which will most likely have 38-46cm bars, all of which are widely available.