how fast does a crf100f go
The fourtrax will top out at about 55MPH.    Actually a stock fourtrax 250x runs at a top speed of 62, but with slight mods can increase the speeds to well over 75. Answer   it depends what has been done to it but a normal cr125r would go 60 to70 mph they cant go too fast because a cr450 goes 80mph to 100mph.