it will go 70mph. check on www.topspeed.com.
about 70mph
As fast as it can.
my son was clocked by the state police at 100 mph
i clocked my racing kx100 with stock gearing going 65 guned
It goes about 60-73 mph.
about 90mph :)
as fast as you want it
75 to 85
Not aware of a KX300.
40 mph
60 -65