I got this for a off a motocross web site
" AMA and their delegates just passed a preliminary vote to allow 144cc's. Final vote tomorrow. They wanted 150cc, but all manufactures could not get there without stroking the motor. That should put the HP in line with a stock 250F.
Just finished up the committee portion of AMA congress here in OHIO and I am very happy to report that we might have evened the playing field for 125 riders competing against the 250f's. Looks like you will be allowed to bore the bikes out to 144cc's to make them competitive. Representatives from Suzuki and KTM along with Wiseco were on hand to lend their input and support for this proposed rule change.
What this means is you will be able to run this bike as long as it's stamped with the cc displacement on the cylinder and no larger than 144cc's. This will NOT apply to the YOUTH class though as it's a 125cc class only so that will remain the same and I'm quite certain you WONT be able to race this 144cc Machine in the 125 Stock class at Lorettas. I know it leaves a few holes but I think in the end it will help struggling families going to the races who have to deal with a 4 stroke blowing up and can now go back to a 2 stroke with a more realistic rebuild bill from their local mechanic. The Wiseco Rep had the horsepower charts for both bikes and said they are very close when you put a 144 up against a 250 F and the rebuild cost when they go down is much less on the 2 stroke vs the 4 stroke. The KTM representative was very interested in this and I wouldnt be surprised to see a 144 kit available directly from KTM very very soon."
That would be sweet if the 250 class did the same.
" AMA and their delegates just passed a preliminary vote to allow 144cc's. Final vote tomorrow. They wanted 150cc, but all manufactures could not get there without stroking the motor. That should put the HP in line with a stock 250F.
Just finished up the committee portion of AMA congress here in OHIO and I am very happy to report that we might have evened the playing field for 125 riders competing against the 250f's. Looks like you will be allowed to bore the bikes out to 144cc's to make them competitive. Representatives from Suzuki and KTM along with Wiseco were on hand to lend their input and support for this proposed rule change.
What this means is you will be able to run this bike as long as it's stamped with the cc displacement on the cylinder and no larger than 144cc's. This will NOT apply to the YOUTH class though as it's a 125cc class only so that will remain the same and I'm quite certain you WONT be able to race this 144cc Machine in the 125 Stock class at Lorettas. I know it leaves a few holes but I think in the end it will help struggling families going to the races who have to deal with a 4 stroke blowing up and can now go back to a 2 stroke with a more realistic rebuild bill from their local mechanic. The Wiseco Rep had the horsepower charts for both bikes and said they are very close when you put a 144 up against a 250 F and the rebuild cost when they go down is much less on the 2 stroke vs the 4 stroke. The KTM representative was very interested in this and I wouldnt be surprised to see a 144 kit available directly from KTM very very soon."
That would be sweet if the 250 class did the same.