What are the reasons for the displacement limitations in the 250/450 class? It seems arbitrary. Why not just make it an open class with unlimited engine displacement. I would think that having an open class would give the manufactures freedom to optimize displacement which should make for a better bike. I’m not saying that a 500cc 2stroke is the way to go but maybe a 280cc or 320cc 2stroke or a 480cc 4stroke may make for a better bike. Plus, varying displacements should yield more variety in MX bikes. Currently, all new 250cc 2stroke MX bikes have about the same power characteristics. Allowing the manufacture to use any displacement they want should allow for bikes with more diverse powerbands as each manufacture would probably pick a different displacement. Riders would pick the motor they prefer and manufacturer’s engine designs would converge to the most popular motor designs.
And while we are at it, I would like to see the 125cc limitation raised to 200cc. It seems to me that those extra 75 cc’s could give an engineer a whole lot more freedom to design a bike for a certain powerband. Plus it would compete well with the 250 4strokes
And while we are at it, I would like to see the 125cc limitation raised to 200cc. It seems to me that those extra 75 cc’s could give an engineer a whole lot more freedom to design a bike for a certain powerband. Plus it would compete well with the 250 4strokes