100hrs
Any bike can be used to race. The XR80R is a 4-stroke engine so even though it is an 80R, it is not traditionally considered a race bike. The Honda CR series are considered race bikes. They are 2-stroke engines.
An enduro bike is specialised for nature of the sport, with the deep suspension of a motocross bike combined with the features required to make it legal for the public road portions of the course. Engines are generally single-cylinder two stroke between 125 and 300cc. or four stroke between 250 and 650cc. It really is a mix of a road bike and a dirt bike. it has the knobby tires and suspension of a dirt bike, but the characteristics of a road bike too.
2 stroke engines are not widely used on street bikes because of the vibration, It makes for a shaky bike and the sudden spurts of power are somewhat undesireable. Since the majority of 2 stroke engines are meant for off road use it is a matter of necessity to have a kick start. If you are out riding in the woods or desert which is where the bike is meant to be a dead battery or faulty starter would mean hours of pushing to get to a road, the kick start eliminates that huge hassle.
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.
It's a dirt bike that uses a 2-stroke engine.
depends 2 stroke of 4 stroke and racing bike or a trail bike
There are electric bikes(which usually legally are considered bicycles) and there are bikes with combustion engines.(which usually are seen as either scooters/mopeds or motorcycles by the law.) For the combustion engines you can have either 2-stroke engines(which usually are fairly small) or 4-stroke engines. You can have one cylinder, or several. Then there are a few custom builds with turbine engines and the occasional drag/showbike with jet, or rocket engines. Most bikes run on gasoline, but there are Diesel bikes too.
You can rebuild it and it would last a long time if the oil were changed on a scheduled maintenence interval . Also if the bike itself is in great shape that's all the more reason to save it !! Its cheaper to keep her if you do it yourself ..
If you put 4 stroke what in it
Top speed is not what a dirt bike is all about, it is how quick they are. With the broad range of displacement (cc's) and the 2 and 4 stroke engines, there really isn't a good answer to this question. I have a 2 stroke 200cc and a 4 stroke 525. The 200 will top out around 65 while the 525 somewhere around 95, yet in the woods, the 200 is quicker.
4 stroke
they suck ^^ First off let me say I agree. If you're talking about modern MX bikes (not those old crazy guys with road bike engines in dirtbikes) people always tried to race 4 stroke trail bikes with little success in 250 class. It was in 1998 that Yamaha developed the YZ400F and WR400F two high performance, water cooled 4 stroke bikes, one for tracks and one for woods. The bike was the begining of the 4 stroke revolution and the same 400 4 stroke engine went on to win the first AMA championship on a four stroke.