Just found the "E-FUN" website. If you view products and click on the "EFUN-D" http://www.efun-ev.com/pro-d.html model and then click on the next to last checkmark icon to the right, the dyno image says 109 7.2 km/hr under "max speed" reading.
Anyone know more about this bike? What is it sold as in the US and is it capable of this speed (67.7 mph) ?
No, max speed says 90 km/h. Maybe it was a typo and they changed it.
Keep the rubber side down and the shiny side up.
At least two US bikes are made by EFun - the RMartin EVD and the XM-5000Li. I believe the XM-4000 bikes are EFun as well.
I have 1050 miles on my 5000. Top speed (GPS and radar verified) is 62 and I can abuse it for about 45 miles range. The 5000 and RMartin bikes probably use different motor/controller combinations, so range and speed are likely to vary. Temperature, rider weight, and hills are significant as well.
Andy