Meanwhile, Dylan Walsh was even more dominant in his races on Sunday, racing to a hat-trick of wins in the MX2 (250cc) class and making huge inroads into the points lead enjoyed by defending champion Hamish Harwood.
Walsh began the day 20 points adrift of Takaka man Harwood, but ended it just 11 points behind.
Altherm JCR Yamaha Racing Team boss Josh Coppins was naturally thrilled with his riders' efforts on Sunday.
"This is what we needed; hoped for and worked for," said the former Grand Prix star from Motueka.
"It was a big effort from all our team crew and I can't thank them enough. All of our product suppliers were brilliant too."
"The riders were patient and rode smart and we plan now to lift things to another level again at the final round."
The Altherm JCR Yamaha team-mates of Ferris and Walsh, Mangakino's Kayne Lamont (MX1) and Waitakere's Ethan Martens (MX2), are respectively positioned sixth and third overall in their classes after three rounds.
The fourth and final round of the series is set for the Digger McEwen Motocross Park in Taupo on March 25.
Main Photo: Australian Dean Ferris (Altherm JCR Yamaha YZ450F), now with the lead in the MX1 class.
Credit: Andy McGechan, BikesportNZ.com
MX1 class: Overall Round 3
1 Dean Ferris 70 Points
2 Todd Waters 64 Points
3 Cody Cooper 56 Points
4 Luke Styks 52 Points
5 Rhys Carter 48 Points
6 Kade Mosig 43 Points
7 Kayne Lamont 43 Points
8 Brad Groombridge 39 Points
9 Roydon White 34 Points
10 Kieran Scheele 33 Points
MX1 class: Championship Standings after Round 3
1. Dean Ferris (Australia, Yamaha) 196 points
2. Cody Cooper (Mount Maunganui, Honda) 195
3. Todd Waters (Australia, Honda) 179
4. Luke Styke (Australia, KTM) 157
5. Rhys Carter (Mount Maunganui, Kawasaki) 40
MX2 class: Overall Round 3
1 Dylan Walsh 75 Points
2 Hamish Harwood 66 Points
3 Hadleigh Knight 60 Points
4 Trent Collins 48 Points
5 Ethan Martens 47 Points
6 Logan Blackburn 45 Points
7 Blake Gillard 41 Points
8 Benjamin Broad 40 Points
9 Kaleb Barham 38 Points
10 Tyler Steiner 32 Points
MX2 class: Championship Standings after Round 3
1. Hamish Harwood (Takapuna, KTM) 208 points
2. Dylan Walsh (Christchurch, Yamaha) 197
3. Ethan Martens (Waitakere, Yamaha) 153
4. Kaleb Barham (Australia, Husqvarna) 134
5. Logan Blackburn (Te Puke, KTM) 134
125cc class: Overall Round 3
1 Hayden Smith 72 Points
2 Kurtis Lilly 64 Points
3 Dan Bell 56 Points
4 Hayden Wilkinson 54 Points
5 Joel Natzke 39 Points
6 Jacob Hicks 38 Points
7 Ryan Gwynn 37 Points
8 Joshua Bourke-Palmer 33 Points
9 Riley Campbell 30 Points
10 Xavier Dalziel 27 Points
125cc class: Championship Standings after Round 3
1. Hayden Smith (Taihape, KTM) 213 points
2. Kurtis Lilly (Karaka, Husqvarna) 205
3. Hayden Wilkinson (Nelson, Yamaha) 154
4. Dan Bell (Levin, KTM) 143
5. Ryan Gwynn (Kakaramea, Husqvarna) 122