the 2 stroke is faster
the 2 strokes have a lot of tourqe and a lot of speed ^^ Thats wrong, 4 strokes have more torque. CC for CC 2 strokes are faster for ex. a Yz250 (2s) is faster than a YZ250f (4s). But in classes, the 4 strokes have such a displacement advantage its stupid, a 250 2 stroke has to race against a 450 4 stroke.... as the old saying goes there's no replacement for displacement, so the 4 strokes win because of rules...
Current XT and WR models are all 4 strokes. Cross models YZ have engines in 2 and 4 strokes.
a 125 2t will have a lead in the start because that's the thing about 2 strokes they have alot of speed but the 250 4 stroke will definitely win given that the engine is bigger and that 4 strokes have more traction and power..............
2 Strokes make much more power per cc than 4 strokes. For example a 2 stroke 125 and a 4 stroke 250 both make about the same power 4 strokes have much more low end torque though
250x is a 4 stroke. The only 2 strokes Honda ever made were the 250R ATC and ATV.
This response will address race dirt bikes and ignore the entry level air cooled 4-strokes such as the TTR's, CRFxxxF's, KLX's, etc. The 4-strokes tend to be a little better on fuel and pollute less as a rule. Gone are the days of 4-strokes lasting forever and being bullet proof. The race 2-strokes and 4-strokes enjoy a similar reliability history with the 250's being somewhat worse due to the high RPM's they run. 4-stroke power delivery is more desirable by some groups due to the low end torque and smoothness. There is still a small weight penalty (5-10 lbs in many cases) with 4-strokes. Probably universally the most undesirable aspects of the 4-stroke race dirt bikes is the fact that 1) they can be very difficult to start, 2) parts and accessories typically cost 2X to 3X as much (rebuild parts, after market exhaust, etc.) as 2-strokes. 3) the horrific costs associated with valve jobs (titanium) and the frequency some brands will require this repair. Why did the 4-strokes all but replace the 2-strokes in motocross? The AMA changed the class rules such that a rider will get the most power from 4-stroke in a given class. It is rumored that the AMA sold out to the EPA. To put it another way, the power of a 2-stroke 125 does NOT equal that of a 4-stroke 250. The power of a 2-stroke 250 does NOT equal that of a 4-stroke 450. The AMA has pretended it does in an effort to kill the 2-stroke. The 2-stroke is alive and well (and often preferred) in the freestyle MX sect as well as the off-road market (GNCC, hare scrambles, enduros, etc). These 2-stroke bikes are plentiful among the European mfr's such as KTM, Husqvarna, Gas Gas, etc.). Yamaha's YZ250 is still available as well.
im pretty sure you can if you mod it and race it in small 4 strokes
Some of them are two strokes an some are 4 strokes Most of them are 2
the Honda cr 250 is alot faster on take off up to its topspeed but the 4 strokes are usally faster at top end but it depends the gearing
No. I have a 100cc kx 100 2 stroke and i can race 450's and beat them. 2 strokes are faster off of the starting line and in a straight away race, but after maybe a mile 1/2 the 4 stroke will win
it depends..because yammaha manufacturers do make both 2 strokes and 4 strokes
The guideline is how many strokes you are under par. So on a par 4, which is under 2 strokes, - 2, its called an Eagle. Holing it out in 1 on a par 4, - 3 strokes is an Albatross.