it will go 70mph. check on www.topspeed.com.
100 mph
Depending on how it is geared around 70 mph.
90 mph
Probs about 60 - 70 mph
fast enough
about 40mph
210
about 60mph
it all dipends on the bike
A 70cc dirt bike will achieve a top speed of around 40mph
not very fast
55 to 60 its fast