The first customer shipments of 9 of the new ZEV 7100 are getting ready to go out the door. This is the latest in the evolution of that basic chassis with the bike now holding 28 of the GBS 60 Ah battery at 84 volt nominal system. This is basically the battery pack and motor that was in the T 7100 model fitted over into the more standard scooter looking bike. Because we have a bunch of customers driving the T 7100 around for a year or more, we know the range and speed as being 100 miles at 65% power, or 50 miles at 70-75 mph. The bike with a 165 lb, 6ft rider runs over 75 mph. We just certified the bike in Australia also and got approval for 200 into EEC countries. $8900 retail in the USA. http://zelectricvehicle.com/19.html 
With that power pack, the bike now has more range and speed than any other bike on the market at the moment. This is a lot larger than any of the Chinese, and the one bike that we know of with a similar size battery pack runs far less range and speed.
(although I am driving a new prototype of a ZEV T Series with 100 Ah battery in it to work and back 46 miles at 75 mph to try to get a bunch of miles on it before the snow stops the fun that will raise the bar again)
These bikes are using the 12 kw motor with the cooling finned cases. The controller is the 3 speed ZEV.
DHZ
photos of the bike
I certainly wouldn't refuse one of those if offered one. Are you still using the same front end? That's the thing I'd update, especially for the faster models.
"same front end"?
The rake is out a little more which results in a little more trail, fork legs slightly different length.
Sorry, I meant the forks, steering bearing and whatever it uses as a triple clamp.