Depends on-
1) if it's 2-stroke or 4-stroke
2) how many cylinders it has
3) when it was manufactured
3) how much it's tuned
For example, a 1992 Honda crm250 makes about 40bhp out of the factory. This is a single cylinder, 2-stroke enduro Motocross bike. They can be tuned up to near 50bhp though.
A late model Aprilia RS250 makes around 62bhp out of the factory. This is a twin cylinder 2-stroke sports bike.
The 250cc 2-stroke race bikes in 250GP make a little over 100bhp (gulp!), but these are in a very high state of tune and rebuilt every week.
4-stroke bikes make less peak power because they ignite the fuel mixture in any given cylinder once every four strokes, whereas 2-strokes ignite the fuel mixture once every two strokes (hence the names) however 4-strokes usually have a much wider power band and flatter power curve than the peakier and narrow power banded 2-strokes which tends to make them much easier to use.
Not sure of any figures of 250cc 4-strokes but would expect a single cylinder motor to be 25-30bhp for the more modern bikes. Newer, more advanced motors are of course usually more powerful than older technology, however 2-strokes are being fazed out and no longer developed because their emissions are not as clean as 4-strokes (much to many peoples sadness as 2-strokes are much more exhilarating to ride). I personally have a 1992 Honda crm250 (2-stroke) and a Triumph Daytona 675 (4-stroke) and though the Triumph has 3 times the power of the Honda, it's the CRM's "get you when your not looking" delivery that has the biggest grin factor!
I don't see how anyone could improve on this answer. He hit it pretty well.
motorcycle
Actually HP can only be estimated . he HP depends on a lot of factors about the motor.
Meli Rocks!!!!!!! Meli Rocks!!!!!!!
~74 hp. ~74 hp.
There is no one motorcycle, and no one answer. It could be 5 hp or 100 hp. The 2018 Harley Road Glide has 77.34 hp
I believe that the smallest motorcycle is at least 250cc's.
no, you need a motorcycle endorsement
It depends on the type of motorcycle you want. You can get a 250cc bike starting around $5000. If you want something like a Hayabusa, it is something is around $13000
The 176cc engines are about 5 hp; 160cc =3-4 hp 176 (foreign) 4-5 hp 205cc= 5-7 hp 250cc= 8 hp 350cc=11-13 hp
17
No
Most people get 70 miles per gallon on the Suzuki 250cc cruiser motorcycle with normal riding. Some people get 90 mile per gallon.