KYMCO has stopped offering the Quannon 150 sport bike in the USA.

Kymco USA reclaimed some of them from defunct dealers and are selling them for $1,999.00, that is a $1,000.00 off the MSRP.

This dealer in California has some of those repose...
http://bertsinventory.com/#/motorcycle/

http://www.cycletrader.com/listing/2...annon-99163578

I am not sure if the 150cc version offered in the USA has a 4 valve engine as the 125cc sold in other markets does?

The engine is an OHC and it should generate about 15hp.