Yeah I know, an esoteric question at best. I only thought of it because I was looking through the Peugeot catalogs so generously posted by one of our forum members and came across something like a UX-10E in a little sidebar next to the PX-10E that said it was the same as the PX-10 but with 27x1 1/4" wheels/tires. So I stated thinking, is the 'U' in the UO's and this UX-10E for "US" market perhaps to indicate the 27" wheels? My brain works in mysterious ways. I'll probably forget to take trash out while I'm contemplating this.