Hayden Mellross (NSW) scored top points in the 100-150cc 13 to Under 15 years class, while another American rider Dakota Alix, took top billing in the 85cc 14 to Under 16 years class.
Meghan Rutledge (NSW) continued her domination of the older females class.
Queenslander Joel Dinsdale took out the class ahead of Duncan, while Mitchell Evans – who also hails from Queensland, took the flag in the 85cc classes.
On the 65cc machines, New South Welshmen David Ustariz and Rhys Budd scored maximum points in their respective classes while Hunter Lawrence kept Queensland in the points chase winning his age class.
In the 50cc Division 2 7 to Under 9 years class it was Bailey Malkiewicz who continued his strong from taking out another race win.
Racing will continue for all classes today (Friday), with some wrapping up their Aussie Titles, while some classes will continue for their fifth and last final of the Championship on Saturday.
Kiwi Results
Female 85cc/150cc 12-u16 yrs - Provisional Results after 3 finals:
1st Courtney Duncan – Leads by 11 points. Race 2 she won by 1:04.714 and Race 3 by 1:01.003
85cc 2 stroke 12-u14 yrs - Provisional Results after 2 finals:
5th Courtney Duncan
10th James Anderson
85cc 2 stroke 9-u12 yrs - Provisional Results after 2 finals:
19th Benjamin Broad
200-250 4 stroke 13-u15 yrs - Provisional Results after 2 finals:
1st Dion Picard
9th Brandon Tipene
28th Hamish Harwood
65cc 9-u11 yrs - Provisional Results after 2 finals:
Oliver Eyre is 22nd
100-150 2 stroke 13-u15 yrs - Provisional Results after 2 finals:
5th Dion Picard – on the same 35 points as Joel Dinsdale
12th Hamish Harwood
13th Brandon Tipene
21st James Anderson
50cc Div 2 7-u9 yrs - Provisional Results after 2 finals:
34th Isaac Broad
150 4 stroke 12-u14 yrs - Provisional Results after 3 finals:
12th Joel Meikle 19th Josh Bartosh