if it has pro circuit racing parts 2 stroke it goes 60 to 80 mph
60 -65
around the 65 mph mark for a big wheel kx 85
there is no such thing as a yz 65 there is a kx 65 and a rm 65 and a ktm 65 but no yz 65
about 50-55 mph
it goes a 540 mph
Very fast best 65s you can buy my son races one and it is fast ,He had a ktm but it was nothing compared to the kx.
i clocked my racing kx100 with stock gearing going 65 guned
stock it will go 60 to 75 but with a pro circuit fat pipe it will go 60 to 80
As fast as it can.
The big wheel version's i would expect to hit around the 65-70 mph mark.
i would say 60 to 70 but it wont touch my kx 65