Yamaha riders swept the latest round of the Australian Motocross Championships, although Suzuki’s matt Moss now leads the MX1 championship and Kiwi KTM rider Hamish Harwood continues to lead the MX Development class.

Hervey Bay’s seventh round of the Monster Energy MX Nationals on Sunday may prove to be pivotal in the battle for the coveted MX1 title, with KTM’s Todd Waters forced to relinquish the hold he had on the top spot and a new leader emerging.

CDR Yamaha rider Billy Mackenzie, from Scotland, claimed his first overall victory aboard the factory-backed YZ450F, using a GoPro Super Pole victory and a pair of third places in the two 30-minute motos to clinch the round.

Behind the Scotsman were the Moss twins Matt and Jake, with Moss Moss (Motul Pirelli Suzuki) moving into the championship lead following seven of 10 rounds. Moss finished second in Super Pole, sixth in moto one and won moto two.

Jake Moss (Campbell Mining Suzuki) was third overall after being excluded from the Super Pole session, posting a solid second in both motos for the weekend.

New Zealand MX1 champion Cody Cooper (Suzuki) finished the day sixth overall in the MX1 class and he remains fourth in the series standings.

The opening moto win belonged to South African series newcomer Gareth Swanepoel (Carlton Dry Honda), sealing him fourth overall after he raced to fifth in the second outing.

Former series leader Waters (Motorex KTM) was fourth in both motos, resulting in fifth overall for the round and he now trails Matt Moss by two points with three rounds remaining.

The Motul MX2 ranks saw Luke Styke (Serco Yamaha) race to his sixth round win of the season with another clean-sweep, heading privateer Tune Tech Racing KTM rookie Kale Makeham and Kade Mosig (Zero Seven Motorsports Kawasaki).

Makeham qualified first and scored 3-2 results in the motos, while Mosig rallied to 2-3 positions. Styke now enjoys a mammoth 91-point advantage in the standings.

Kiwi riders Rhys Carter (Suzuki) and Kayne Lamont (KTM) finished the day eighth and ninth overall respectively on Sunday. They are respectively 10th and 11th overall in the Mx2 championship chase.

The Pirelli MXD ranks saw GYTR Yamaha rider Jay Wilson win his first round of the season, winning the opening moto before cementing the overall with second in moto two. Championship leader Hamish Harwood (KTM) was second overall after winning moto two, and Wilson’s teammate Joel Dinsdale was third.

The Scott Rookies round was won overall by Queensland rising star Nathan Crawford with back-to-back wins for Yamaha Junior Racing, heading Jed Beaton and Zak Small for the overall.

The Monster Energy MX Nationals, Australian Motocross Championship, will continue at Swan Hill in Victoria on Sunday, 11 August, when the series makes its official debut at the venue.

MX1 overall results:

1. Billy Mackenzie 65

2. Matt Moss 64

3. Jake Moss 64

4. Gareth Swanepoel 61

5. Todd Waters 58

6. Cody Cooper 51

7. Kirk Gibbs 50

8. Lawson Bopping 45

9. Jay Marmont 45

10. Cody Mackie 42

MX1 championship standings (after seven of 10 rounds):

1. Matt Moss 436

2. Todd Waters 434

3. Billy Mackenzie 405

4. Cody Cooper 382

5. Lawson Bopping 365

6. Jake Moss 343

7. Kirk Gibbs 343

8. Adam Monea 323

9. Jay Marmont 286

10. Tye Simmonds 273

MX2 overall results:

1. Luke Styke 70

2. Kale Makeham 62

3. Kade Mosig 62

4. Ryan Marmont 53

5. Beau Ralston 52

6. Brock Winston 52

7. Dylan Long 47

8. Rhys Carter 46

9. Kayne Lamont 44

10. Geran Stapleton 40

MX2 championship standings (after seven of 10 rounds):

1. Luke Styke 473

2. Kale Makeham 382

3. Brock Winston 354

4. Josh Cachia 305

5. Geran Stapleton 304

6. Ryan Marmont 297

7. Luke Clout 285

8. Takeshi Katsuya 280

9. Dylan Long 274

10. Rhys Carter 255

MXD overall results:

1. Jay Wilson 67

2. Hamish Harwood 63

3. Joel Dinsdale 62

4. Jack Simpson 54

5. Corey James 48

6. Jake Emmanuelli 46

7. Jesse Madden 44

8. Dylan Wilson 43

9. Joel Wightman 42

10. Dakota Court 39

MXD championship standings (after five of eight rounds):

1. Hamish Harwood 307

2. Jack Simpson 279

3. Jay Wilson 257

4. Joel Dinsdale 256

5. Jesse Dobson 249

6. Corey James 226

7. Joel Wightman 221

8. Logan Blackburn 205

9. Jake Emmanuelli 180

10. Nick Scott 176