[URL]http://www.flickr.com/photos/pacocampos/sets/72157613489937907/[/URL] 100cm from wheel axis to axis. Mate of mine is importing them (to Dagoland) from China for about a grand, built to his specs. They can also be ridden by grown ups and XXL sized old farts as an über pocket bike. I have insisted him not to let me try one.