they can go pretty fast. they will beat a Yamaha blaster 200
It can go 60 mph.
yes iif u put a bore kit in it
depending on the year, condition, and work done to the bike it will go easily 50 and maybe up to 80 with work done to the motor. it wont my yz 250 2010 doesn't Evan go tha it will go about 50 max with the wind behind you
fast
Crf150r or any 85cc two stroke(cr85 is the best in my opinion) or if you want lots of power go with a 250 Yamaha tons of power I'm about 5,4 125 pounds and a yz250f rips and is not even that tall
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