Williams Event Management (WEM) has announced that round five of the 2010 Rockstar Energy Drink MX Nationals to be held at Raymond Terrace in New South Wales will now be held on 30 May.

The round has been moved forward by one week after it was originally scheduled for 6 June, although no official reason for the move has been released by WEM or Motorcycling Australia.

Round one of the MX Nationals will be contested at Horsham in Victoria on 28 March, with the official series launch to be held at Barrabool next week on 5 March.

It was also confirmed earlier this week by MA that 250cc two-strokes will be permitted in the Pro Lites category, pitting them head-to-head with the 250cc four-strokes for the first time at a National level in 2010.