More than likely you have a exhaust leak.Check the headpipe seal
It's a dirt bike that uses a 2-stroke engine.
Two strokes can accelerate faster but it depends on engine size
For the same engine size, it should be.
All of the Orion bikes use a 4 stroke engine.
that engine code is not a four stroke, its 2 stroke 80cc
It would depend on what was wrong with the engine. More details are required.
two two One of the best enduro motorcycles ever produced
the top speed of a 150cc dirt bike can depend on a lot of things like if its a 2 stroke or a 4 stroke engine what kind of terrain your on and how much you way but the average is about 50-55mph
A dirt or trail bike engine works much like any other internal combustion engine. However, it may be a two stroke engine that reacts more quickly and has more torque. The transmissions on dirt bikes are often geared lower also.
No we can't use 100cc 4 -stroke dirt bike race against 85cc dirt bikes.