from my research 55-60mph.
probabally a little faster than 45. My 2002 beartracker 250 goes around 47-48 with mud lites on it nothing else done to it
I would say 85-90mph
fast
well, they must take out the original engine and put in a Yamaha R1 engine which makes the ATV go 250 mph
if it is a Yamaha wolverine 450 it will go 61mph
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 70mph
70mph