A American Motorcyclist Association (AMA) divulgou as listas provisórias de inscritos para a abertura do Monster Energy AMA Supercross 2019 no Angel Stadium em Anaheim, Califórnia, em 5 de janeiro.
Embora a lista tenha vários pilotos inscritos na Classe 250, nem todos estarão competindo neste sábado. A maioria equipes da 250SX inscrevem todos os seus pilotos para que em caso de lesão seja substituidos.
Esta não é a lista final para o próximo dia 5. Haverá mudanças feitas ao longo da semana.
450SX
| # | PILOTO | CIDADE | MOTO |
| 1 | Jason Anderson | Rio Rancho, NM | Husqvarna FC450 |
| 2 | Cooper Webb | Newport, NC | KTM 450 SX-F Factory Edition |
| 3 | Eli Tomac | Cortez, CO | Kawasaki KX 450F |
| 4 | Blake Baggett | Grand Terrace, CA | KTM 450 SX-F Factory Edition |
| 7 | Aaron Plessinger | Hamilton, OH | Yamaha YZ450F |
| 10 | Justin Brayton | Mint Hill, NC | Honda CRF 450 |
| 11 | Kyle Chisholm | Valrico, FL | Suzuki RM-Z450 |
| 14 | Cole Seely | Sherman Oaks, CA | Honda CRF 450 |
| 15 | Dean Wilson | Clermont, FL | Husqvarna FC450 |
| 16 | Zach Osborne | Abingdon, VA | Husqvarna FC450 |
| 17 | Joey Savatgy | Tallahassee, FL | Kawasaki KX 450F |
| 19 | Justin Bogle | Cushing, OK | KTM 450 SX-F Factory Edition |
| 22 | Chad Reed | Dade City, FL | Suzuki RM-Z450 |
| 25 | Marvin Musquin | Corona, CA | KTM 450 SX-F Factory Edition |
| 27 | Malcolm Stewart | Haines City, FL | Honda CRF 450 |
| 41 | Ben Lamay | Anchorage, AK | Honda CRF 450 |
| 42 | Vince Friese | Cape Girardeau, MO | Honda CRF 450 |
| 46 | Justin Hill | Yoncalla, OR | Suzuki RM-Z450 |
| 51 | Justin Barcia | Greenville, FL | Yamaha YZ450F |
| 58 | Brandon Scharer | Gardena, CA | Yamaha YZ450F |
| 62 | Alex Ray | Milan, TN | Suzuki RM-Z450 |
| 74 | Cade Autenrieth | Hemet, CA | KTM 450 SX-F |
| 75 | Cody VanBuskirk | Harvard, IL | Kawasaki KX 450F |
| 80 | Heath Harrison | Silverhill, AL | Kawasaki KX 450F |
| 87 | Dakota Tedder | Surfside, CA | KTM 450 SX-F Factory Edition |
| 94 | Ken Roczen | Clermont, FL | Honda CRF 450 |
| 97 | Adam Enticknap | Lompoc, CA | Suzuki RM-Z450 |
| 99 | Austin Politelli | Murrieta, CA | Honda CRF 450 |
| 118 | Cheyenne Harmon | Dallas, TX | Yamaha YZ450F |
| 120 | Todd Bannister | Colorado Springs, CO | Kawasaki KX 450F |
| 121 | Matthew Bisceglia | Weatherford, TX | Yamaha YZ450F |
| 133 | Brett Hottel | Upland, CA | Suzuki RM-Z450 |
| 137 | Nick Desiderio | Bedminster, NJ | Yamaha YZ450F |
| 145 | Travis Smith | Lancaster, CA | KTM 450 SX-F |
| 192 | Beni Williams Jr. | Hooper, UT | Husqvarna FC450 |
| 214 | Vann Martin | Cypress, TX | Honda CRF 450 |
| 246 | Chance Blackburn | Newman Lake, WA | Honda CRF 450 |
| 282 | Theodore Pauli | Edwardsville, IL | Kawasaki KX 450F |
| 313 | Kyle Swanson | Adkins, TX | KTM 450 SX-F |
| 330 | AJ Catanzaro | Reston, VA | Kawasaki KX 450F |
| 383 | Casey Brennan | Albuquerque, NM | KTM 450 SX-F |
| 393 | Daniel Herrlein | Bethesda, OH | Kawasaki KX 450F |
| 424 | Tyler Custer | Creston, CA | Honda CRF 450 |
| 501 | Scotty Wennerstrom | Jefferson, TX | Kawasaki KX 450F |
| 509 | Alexander Nagy | Richmond, IL | KTM 450 SX-F |
| 526 | Colton Aeck | Simi Valley, CA | Honda CRF 450 |
| 542 | Johnnie Buller | Dinuba, CA | Suzuki RM-Z450 |
| 606 | Ronnie Stewart | East Waterboro, ME | Husqvarna FC450 |
| 651 | Jake Hogan | Acton, CA | Yamaha YZ450F |
| 723 | Tyler Enticknap | Lompoc, CA | Honda CRF 450 |
| 725 | Richard Jackson | Holdenville, OK | Kawasaki KX 450F |
| 805 | Carlen Gardner | Paso Robles, CA | Honda CRF 450 |
| 941 | Angelo Pellegrini | Italy | |
| 951 | Ryan Surratt | Corona, CA | Kawasaki KX 450F |
| 976 | Josh Greco | Lucerne Valley, CA | KTM 350 SX-F |
250SX WEST REGION
| # | PILOTO | CIDADE | MOTO |
| 12 | Shane McElrath | Canton, NC | KTM 250 SX-F |
| 23 | Chase Sexton | Clermont, FL | Honda CRF 250 |
| 24 | Austin Forkner | Richards, MO | Kawasaki KX 250F |
| 31 | RJ Hampshire | Wesley Chapel, FL | Honda CRF 250 |
| 34 | Dylan Ferrandis | Murrieta, CA | Yamaha YZ250F |
| 35 | Mitchell Harrison | Murrieta, CA | Yamaha YZ250F |
| 36 | Michael Mosiman | Menifee, CA | Husqvarna FC250 |
| 39 | Colt Nichols | Muskogee, OK | Yamaha YZ250F |
| 40 | Sean Cantrell | Murrieta, CA | KTM 250 SX-F |
| 44 | Cameron McAdoo | Chesterfield, SC | Honda CRF 250 |
| 47 | James Decotis | Peabody, MA | Suzuki RM-Z250 |
| 54 | Dylan Merriam | Corona, CA | Husqvarna FC250 |
| 60 | Justin Starling | Deland, FL | Husqvarna FC250 |
| 61 | Garrett Marchbanks | Coalville, UT | Kawasaki KX 250F |
| 67 | Enzo Lopes | Wildomar, CA | Suzuki RM-Z250 |
| 68 | Brandan Leith | Eagle Mountain, UT | Husqvarna FC250 |
| 72 | Martin Castelo | Murrieta, CA | Suzuki RM-Z250 |
| 73 | Martin Davalos | Tallahassee, FL | Kawasaki KX 250F |
| 85 | Dare Demartile | Lincoln, CA | Honda CRF 250 |
| 92 | Adam Cianciarulo | New Smyrna Beach, FL | Kawasaki KX 250F |
| 96 | Chase Marquier | Newcastle, OK | Husqvarna FC250 |
| 105 | Tomas Ravenhorst | Willow Grove, Australia | KTM 250 SX-F |
| 111 | Chris Blose | Phoenix, AZ | Husqvarna FC250 |
| 122 | Chris Howell | Spokane Valley, WA | Husqvarna FC250 |
| 141 | Robbie Wageman | Newhall, CA | Honda CRF 250 |
| 156 | Jacob Hayes | Greensboro, NC | Yamaha YZ250F |
| 160 | Jess Pettis | Prince George, Canada | KTM 250 SX-F |
| 178 | Jon Ames | Larkspur, CO | Yamaha YZ250F |
| 188 | Gage Schehr | San clemente , CA | Husqvarna FC250 |
| 194 | Jerry Robin | Corcoran, MN | KTM 250 SX-F |
| 216 | Devin Harriman | Longview, WA | KTM 250 SX-F |
| 232 | Dylan Bolinger | Corona, CA | Husqvarna FC250 |
| 255 | Johnny Garcia | Moriarty, NM | Honda CRF 250 |
| 260 | Dylan Woodcock | Rayleigh, United Kingdom | Yamaha YZ250F |
| 271 | Kyle Fry | Fallbrook, CA | Kawasaki KX 250F |
| 277 | Kordel Caro | Costa Mesa, CA | Yamaha YZ250F |
| 321 | Bradley Lionnet | Menifee, CA | Yamaha YZ250F |
| 348 | Joan Cros | Manlleu, Spain | Kawasaki KX 250F |
| 395 | Charl Van Eeden | menifee, ca | Husqvarna FC250 |
| 418 | Renton Minuto | Avalon, CA | Yamaha YZ250F |
| 427 | Deegan Vonlossberg | Palmdale, CA | Yamaha YZ250F |
| 446 | Blaine Silveira | Lemoore, CA | Honda CRF 250 |
| 471 | Logan Karnow | Vermilion, OH | Kawasaki KX 250F |
| 474 | Niclas Hallafors | Vintrosa, Sweden | KTM 250 SX-F |
| 522 | Cole Zitterkopf | Fruita, CO | Yamaha YZ250F |
| 621 | RJ Wageman | Newhall, CA | Yamaha YZ250F |
| 702 | Josiah Hempen | Argyle, IA | Yamaha YZ250F |
| 767 | Mason Wharton | Battle Ground, WA | Kawasaki KX 250F |
| 773 | Thomas Do | Saint Romain En Viennois, France | Suzuki RM-Z250 |
| 910 | Carson Brown | Ravensdale, WA | Husqvarna FC250 |
