Red Bull KTM Factory rider Chase Sexton has clocked the quickest time in the 450 class, as the Lawrence brothers finished second and third quickest. Justin Barcia and Dylan Ferrandis were also quick, in fourth and fifth.

450 Practice

1 4 Chase Sexton 2:20.988

2 1 Jett Lawrence 2:21.379

3 96 Hunter Lawrence 2:23.369

4 51 Justin Barcia 2:25.033

5 14 Dylan Ferrandis 2:25.130

6 7 Aaron Plessinger 2:25.703

7 32 Justin Cooper 2:25.730

8 21 Jason Anderson 2:26.223

9 22 Freddie Noren 2:28.456

10 27 Malcolm Stewart 2:28.673

11 53 Derek Kelley 2:29.340

12 60 Lorenzo Locurcio 2:29.486

13 12 Shane McElrath 2:29.525

14 36 Phillip Nicoletti 2:29.576

15 58 Cullin Park 2:29.695

16 46 Justin Hill 2:30.177

17 84 Anthony Rodriguez 2:30.238

18 70 Jerry Robin 2:30.462

19 28 Christian Craig 2:30.485

20 23 Grant Harlan 2:30.674

21 75 Marshal Weltin 2:30.725

22 68 Romain Pape 2:30.816

23 15 Dean Wilson 2:30.979

24 93 Bryce Shelly 2:31.181

25 87 Max Miller 2:31.346