For the Amateur MX2 classes only, the maximum displacement for two-strokes will be increased to 250cc. The two-stroke displacement rule for the MX1 class will not change, therefore Amateurs may compete in both the MX2 and MX1 classes with a 250 two-stroke motorcycle.
Intermediate ranked riders will be permitted to compete in the MX2 Pro/Am class at CMRC Nationals with a 250cc motorcycle.
The maximum displacement for two-strokes in the Pro class will not increase, and will remain at 153cc.
This rule will be consistent with that of the AMA.