70
if it is a Yamaha wolverine 450 it will go 61mph
It has 26hp
If I had to guess I would say mine would do 65 maybe 70 stretched out
It takes 2.5 quarts
52mph
toped out it will hit about 125
I don't know about the YZF but the YFZ has a top speed of 74 mph according to Yamaha.
you need 2 pull the front plastics off and disconnect the wires for the speedometer and its right there
Approximately from what I've found 90 to 120.
the yfz 450 is not that fastest quad, Its not far from the top but raptors have more top speed. there is no 250 that will stand up to a yfz 450 stock
how do you know if your yamaha atv is a 400 or a 450