Defending 450SX champion Chase Sexton has switched his career number to four ahead of next season, the American Motorcyclist Association (AMA) has confirmed in announcing the 2024 AMA Supercross and Pro Motocross rider number list.

Sexton – upon departing Team Honda HRC – will move from his customary 23 to the high-profile single digit of four, however, will wear the number one in Monster Energy Supercross throughout his title defense.

Next year’s numbering system also sees the addition of Jett Lawrence and Haiden Deegan to wear the number one plates during the SuperMotocross World Championship (SMX) Finals series, while Lawrence will use the number one in Pro Motocross after dominating 450MX as a rookie this year.

Additional new career numbers for 2024 include Deegan securing 38, while Levi Kitchen also earned a career number and opted for 47 upon his transfer to Monster Energy Pro Circuit Kawasaki. Former racers who no longer hold career numbers include Ryan Dungey (5), Zach Osborne (16), Broc Tickle (20), Chad Reed (22) and Alex Martin (26).

Notably, Fredrik Noren will take charge of the famed 22 for next year, while Grant Harlan was in position to use the number 23. The number 13 will once again be absent from the field in 2024.

2024 AMA Supercross and Pro Motocross rider numbers:
1 (450SMX) – Jett Lawrence
1 (450SX) – Chase Sexton
1 (450MX) – Jett Lawrence
1 (250SMX) – Haiden Deegan
1 (250MX) – Hunter Lawrence
1E (250SX East) – Hunter Lawrence
1W (250SX West) – Jett Lawrence
2 – Cooper Webb (career number)
3 – Eli Tomac (career number)
4 – Chase Sexton (new career number)
6 – Jeremy Martin (career number)
7 – Aaron Plessinger (career number)
9 – Adam Cianciarulo (career number)
10 – Justin Brayton (career number)
11 – Kyle Chisholm (career number)
12 – Shane McElrath (career number)
14 – Dylan Ferrandis (career number)
15 – Dean Wilson (career number)
16 – Tom Vialle
17 – Joey Savatgy (career number)
18 – Jett Lawrence (career number)
19 – Justin Bogle (career number)
20 – Maximus Vohland
21 – Jason Anderson (career number)
22 – Fredrik Noren
23 – Grant Harlan
24 – RJ Hampshire (career number)
25 – Marvin Musquin (career number)
26 – Garrett Marchbanks
27 – Malcolm Stewart (career number)
28 – Christian Craig (career number)
29 – Ty Masterpool
30 – Jo Shimoda (career number)
31 – Jordon Smith
32 – Justin Cooper (career number)
33 – Jalek Swoll
34 – Ryder DiFrancesco
35 – Talon Hawkins
36 – Phil Nicoletti
37 – Max Anstie
38 – Haiden Deegan (new career number)
39 – Pierce Brown
40 – Dilan Schwartz
41 – Carson Mumford
42 – Caden Braswell
43 – Seth Hammaker
44 – Josh Hill
45 – Colt Nichols (career number)
46 – Justin Hill (career number)
47 – Levi Kitchen (new career number)
48 – Chance Hymas
49 – Jose Butron
50 – Enzo Lopes
51 – Justin Barcia (career number)
52 – Derek Drake
53 – Derek Kelley
54 – Chris Blose
55 – Mitchell Oldenburg
56 – Jeremy Hand
57 – Nate Thrasher
58 – Cullin Park
59 – Daxton Bennick
60 – Lorenzo Locurcio
61 – Stilez Robertson
62 – Kevin Moranz
63 – Cameron McAdoo
64 – Austin Forkner
65 – Henry Miller
66 – Justin Starling
67 – Benny Bloss
68 – Romain Pape
69 – Coty Schock
70 – Jerry Robin
71 – Cole Thompson
72 – Jace Owen
73 – Robbie Wageman
74 – Josh Cartwright
75 – Marshal Weltin
76 – Michael Mosiman
77 – Preston Kilroy
78 – Josh Varize
79 – Harri Kullas
80 – Michael Hicks
81 – Cade Clason
82 – Mitchell Harrison
83 – Guillem Farres
84 – Anthony Rodriguez
85 – Hunter Yoder
86 – Luca Marsalisi
87 – Max Miller
88 – Dylan Walsh
89 – Luke Neese
90 – Hardy Munoz
91 – Devin Simonson
92 – Jace Kessler
93 – Bryce Shelly
94 – Ken Roczen (career number)
95 – Ryan Surratt
96 – Hunter Lawrence (career number)
97 – Tristan Lane
98 – Kaeden Amerine
99 – Jett Reynolds