The Bekant's EU version goes 3cm higher than the US version. I'm 6'1" and it's nowhere near maximum. A colleague of mine is 6'4" and doesn't max it out either. Height is between 65 and 125cm for the EU version, versus 56 to 122cm for the US version.
http://www.ikea.com/gb/en/catalog/products/S49061191/
http://www.ikea.com/us/en/catalog/products/S49022524/
http://www.ikea.com/se/sv/catalog/products/S69022537/
http://www.ikea.com/dk/da/catalog/products/S69022523/
The Swedish and Danish versions have the same product code, but the British one is different, yet I don't see any difference in the description. Maybe it's just the different plug.
Americans also benefit from a warning not to be crushed by their furniture.