Depending on the type of 250cc engine, two-stroke or four-stroke, and the state of tune of the engine you can expect anywhere between 20hp for a nice relaxed trail bike to over 40 hp from a fire breathing two-stroke motocrosser.
150mph in full road race trim... assuming four cylinders and two-stroke. The Ninja 250 R, one of the fastest production sport bikes goes 95 mph without any modifications. It has 2 carbs and 2 cylinders.
yes
Depends what kind it is, what brand, if it is four or two stroke. depends on a lot of things but you must look at many different sites to see how fast
two stroke engines have a power stroke every second revolution of the crank shaft. four strokes have a power stroke every fourth revolution of the crank shaft. that is why a 125cc two stroke has about the same power as a 250cc four stroke.
Two strokes can accelerate faster but it depends on engine size
CRF 150 R
KTM!!!
no
2 stroke
the difference between the Honda CR and CRF is that the CR is a two stroke bike, while the CRF is a 4 stroke bike.... the F stand for four stroke
that engine code is not a four stroke, its 2 stroke 80cc