Well with out boring you to death Ill give you the basic version.
A 2 stroke engines piston on the down stroke pulls in fuel and air mixture on the way up it compresses mixture. At the peak of the stroke it is combusted forcing piston down. On the pistons up stroke the exhaust port opens and pushes out exhaust out. If you count the cycles there are 2 hence 2 stroke. The piston makes 2 cycles for every power cycle. The 4 stroke makes 4 cycles for every power cycle.
It's a dirt bike that uses a 2-stroke engine.
motor cross is faster
You really can't, the model hadn't changed much in those years. Just a 50cc four-stroke Yamaha dirt-bike.
the Honda cr80r is a two stroke 80cc dirt bike, the crf 80 i don't believe there is such a thing but the crf 70 is a 70cc fourstroke dirt bike. the cr80r is a lot quicker bike
Mountain bike helmets are better than dirt bike helmets
It's how the engines work. for the same amount of power, a 2-stroke will be lighter, smaller and rev higher. It'll also use more fuel and pollute more. A 4-stroke will run cleaner and more efficiently. It'll make more torque but won't rev as high.
Two strokes can accelerate faster but it depends on engine size
No we can't use 100cc 4 -stroke dirt bike race against 85cc dirt bikes.
4 stroke
depends 2 stroke of 4 stroke and racing bike or a trail bike
A 2 stroke.
Bicycles are powered by legs, however dirt bikes have gasoline powered motor!