250cc Motocross - Two Or Four Stroke?
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WR CRF 250 Engine and 2012 kgm 250exc

250cc Motocross – Two Or Four Stroke?

250cc Motocross – Two Or Four Stroke?

250cc 2-stroke vs. 250cc 4-stroke

If you’re looking to get into racing motocross at AMA sanctioned tracks and are wondering which bike to buy for the 250cc class, then pay attention. Although the four-strokes have pretty much taken over the motocross market lately, it seems that there are a lot of people trying to bring back the two-strokes, and it seems to be working. AMA made it legal so that a 250cc two-stroke can run in the same class as a 250cc four-stroke. Now, the first reaction I had when I heard of this was without doubt to pick the two-stroke. I looked into it a little bit more and came up with this….

250cc Four-Stroke

WR CRF250 4stroke

WR CRF250 4stroke

Now most people would think that a four stroke with the same displacement as a two-stroke would not have a chance. This isn’t the case, due to the fact that companies have put so much more money and effort into making the modern four-strokes extremely high-performance. Some riders that do not like the two-strokes snappy power will often stick to the four-stroke 250 just because they are lazy and like the smoother feel of them. A 250 two-stroke may have more power on top, but when the day gets long and the track starts to get really rough, that’s when the four-stroke starts to shine. Due to the tractability in rough and slick conditions, the four-stroke will be easier to ride faster late in the day. That doesn’t mean it will be faster than a two-stroke though…

250cc Two-Stroke

2012 ktm 250exc 2 stroke

2012 ktm 250exc 2 stroke

Two-strokes are fun to ride because they have a bigger top-end “hit” compared to the four-stroke. If you keep the two-stroke on the pipe then it will definitely be faster, as long as the conditions aren’t too rough. For those of you that want more, snappy power, and a lower center of gravity, then go with the two-stroke. It may not have the traction that a four-stroke has in rough track conditions, but the horsepower makes up for it.
So Which Bike??

After reading the info on each bike you would probably guess that the two-stroke is the better bike for AMA racing, and my answer for that would be, “Yes.” Clearly, it’s a faster bike if the track is in good shape, it handles better because it has a lower center of gravity, it has a lighter front-end, and it smells good. But I will say that if you are a four-stroke guy that doesn’t like the snappy-feeling power band on the two-stroke, then you will be fine on a 250F. The 250F is by no means slow, and any good rider will be able to win on it. My choice would be to ride the 250 two-stroke though because it’s faster, and it’s a new rule that I would take advantage of. Good luck, and no matter what stroke you ride, have fun!!

 

 

Source by Tom Stark

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