In a move that was certainly expected since the 500cc MotoGP bikes were phased out, Dorna Sports CEO Carmelo Ezpeleta proposed a 4 stroke replacement class to begin in 2011, ending the 250cc 2 stroke class after 2010.
We want the class to be competitive, cheaper and a prototype series. We already had some manufacturers announce that they would not be continuing to make two stroke machines, because of the production cost and the fact that they were not interested in making that kind of street bike. They aren´t developing this type of techonology and want to do other things.
He didn’t specify what the new class would be but some are suggesting 4 cylinder machines somewhere in the 600cc area.
Thanks for the tip, Aaron!