Question edited for clarity, name of the maker Kimco > Kymco.
Question moved from Cars and Trucks to correct category.
It is a model from 2012. Are you sure you have the 150cc and not the 50cc? They are restricted to 50mph.
You said "55 mph going down a hill with the wind at our
back". Were you riding with a passenger, or it "our", you are the scooter? A 150 wouldn't do well with a passenger, and you would have to take into consideration your combined weight.
This is the specs, but take into account the Chinese are short, petite, lightweight people.
How fast does a KYMCO 150 go?
between 60 and 70 MPH
Kymco's U.S. distributor told me that the 150's top speed is between 60 and 70 MPH
and that the 250's top speed is between 70 and 80 MPH.
Here are some specs and reviews, but basically, if you want speed, you need a 250, scooters in general are not very aerodynamic! Of get a Honda Fireblade and do One HUNDRED and Sixty Five!