a ttr 90 goes about 35 to 40mph.
a 2007 model will take someone who weights 70 exacley 56kmph will a light kid like my brother who weights 30 it takes him around the 70 to 80 mark
It goes exactly 5 to 222 in 2.2 secounds
About 55 -60 maybe 65
I know from experence u can make them go faster than 65mph depending on mods
fast
if it is a Yamaha wolverine 450 it will go 61mph
I have a yz 80 2001 small wheel and does about 75 mph
a Yamaha blaster can go around 75-80
155mph
Not that fast but about 50 with no upgrades
the Yamaha ttr125 goes about 50 to 55 mph
About 75 mph