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Page 22.
...that's the short of it.
http://www.amasupercross.com/rules/pdf/2012/ama_sxrulebook.pdf
But regarding this post, are we sure the OP is speaking of pro rules or just the amateur AMA?
http://www.mxsports.com/pdf/2011/2011AMARacingRules.pdf
* 125cc: 122cc – 125cc, 2-stroke only
* 250cc: 122cc – 250cc
In the amateurs you can run a 250 2stroke in any 250 class, correct?
Pit Row
Yamaha, Honda, Kawasaki, Suzuki = ProAMA rule making board.
"GuyB: Yamaha didn't "decide". They went with what was allowed by the AMA rule book."
miedosoracing1 knows all. He has no agenda. His posts are unbiased and 100% truthful.
(Good thing I'm doing this behind my keyboard. I wouldn't have the poker face to tell someone that stuff in person.)
So the first year that Yamaha was racing four-strokes, it was against full fields of other four-strokes? Or were they also racing against two-stroke Yamahas?
P.S. I can hear your blood pressure going up from here.
Personally I think it would be very difficult to try to make a class even with both engine types, and would only cause headaches for a sanctioning body and the manufacturers. Apples to oranges. Give them each their own class if need be.
What's a hundred cc's among pro's...
Post a reply to: 350 in the 250 class?