2021 Monster Energy AMA Supercross Championship Arlington 3 (West): 450SX Heat 1 Results
250SX West March 20, 2021
450SX Heat 1 Results
| Rider | Time | Interval | Best Lap | Hometown | Bike | |
|---|---|---|---|---|---|---|
| 1 |  Eli Tomac | 9 Laps | 0:48.805 | Cortez, CO  | Kawasaki KX450 | |
| 2 |  Justin Barcia | +02.275 | 0:49.101 | Monroe, NY | GasGas MC 450F | |
| 3 |  Malcolm Stewart | +11.260 | 0:49.912 | Haines City, FL | Yamaha YZ450F | |
| 4 |  Aaron Plessinger | +16.688 | 0:50.390 | Hamilton, OH | Yamaha YZ450F | |
| 5 |  Joey Savatgy | +20.493 | 0:50.536 | Thomasville, GA | KTM 450 SX-F | |
| 6 |  Dean Wilson | +23.620 | 0:50.622 | Scotland, United Kingdom  | Husqvarna FC 450 | |
| 7 |  Broc Tickle | +28.117 | 0:50.998 | Holly, MI | Honda CRF450R | |
| 8 |  Vince Friese | +32.867 | 0:51.325 | Cape Girardeau, MO | Honda CRF450R | |
| 9 |  Mitchell Oldenburg | +35.234 | 0:51.649 | Alvord, TX | Honda CRF450R | |
| 10 |  Brandon Hartranft | +42.040 | 0:52.887 | Brick, NJ | Suzuki RM-Z450 | |
| 11 |  Cade Clason | +44.525 | 0:52.784 | Arcadia, OH | Kawasaki KX450 | |
| 12 |  Hunter Schlosser | 8 Laps | 0:53.560 | El Paso, TX | Yamaha YZ250F | |
| 13 |  Joan Cros | +02.553 | 0:54.455 | Manlleu, Spain  | Kawasaki KX450 | |
| 14 |  Curren Thurman | +04.900 | 0:53.679 | Rosharon, TX | Husqvarna FC 450 | |
| 15 |  Ronnie Stewart | +10.453 | 0:54.816 | Easton, PA | GasGas MC 450F | |
| 16 |  Lane Shaw | +19.972 | 0:55.148 | Alvin, TX | KTM 250 SX-F | |
| 17 |  Deven Raper | +32.452 | 0:56.113 | Mesa, AZ | Kawasaki KX450 | |
| 18 |  Logan Karnow | +38.872 | 0:54.775 | Vermilion, OH | Kawasaki KX450 | |
| 19 |  Robert Piazza | +49.516 | 0:56.540 | Easton, PA | Kawasaki KX450 | |
| 20 | Scotty Wennerstrom | 7 Laps | 0:56.154 | Tyler, TX | Kawasaki KX450 |
