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View Full Version : AMA Racing announces 94dBA sound limit for 2009 Supercross and Motocross championship

Motorcycle News
07-21-2008, 07:00 PM
New rules will not affect 2009 AMA amateur classes.

More... (http://www.amamotocross.com/article.php?sc=1003&aid=11998)
480PRO
09-09-2008, 09:17 PM
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480PRO
09-16-2008, 09:52 PM
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