Stock its bout 90mph on average... older models being mid 80's... trickin it out a bit you can hit 105ish without too much $$.
65mph
i have a xr 100 r its big and fast. i like it
6
a xr 100
Honda xr/crf 100 would be better.
The 200xr is faster by far
ATK 700 or XR 650
Stock (still corked) with 15/48 gearing should hit around 73 mph.
dirty air filter. clogged main jet or you may have the choke on. the choke lever needs to be pushed all the way down.
Yamaha makes the best dirt bikes. Kawasaki is also good and the old Honda xr bikes were bullet proof but the new ones are junky.
What size 4 stroke dirt bike would greatly vary your top speed. A 125 4 stroke will top out around 48-50 mph while a Honda XR 650 4 stroke top speed is just a bit over 100 mph.
it could cause some back pressure issues and blow up the bike...
With standard OEM gearing, about 75 MPH.