2021 Monster Energy AMA Supercross Championship
Arlington 1 (West) - 450SX Heat 2 Results
AT&T Stadium
Arlington, TX US 
March 13, 2021
450SX Heat 2 Results
| Rider | Time | Interval | Best Lap | Hometown | Bike | |
|---|---|---|---|---|---|---|
| 1 |  Aaron Plessinger | 10 Laps | 0:44.869 | Hamilton, OH  | Yamaha YZ450F | |
| 2 |  Joey Savatgy | +04.234 | 0:45.527 | Thomasville, GA | KTM 450 SX-F | |
| 3 |  Cooper Webb | +04.525 | 0:45.505 | Newport, NC | KTM 450 SX-F | |
| 4 |  Eli Tomac | +06.759 | 0:45.456 | Cortez, CO | Kawasaki KX450 | |
| 5 |  Malcolm Stewart | +13.325 | 0:45.453 | Haines City, FL | Yamaha YZ450F | |
| 6 |  Martin Davalos | +14.911 | 0:45.909 | Quito  | KTM 450 SX-F | |
| 7 |  Vince Friese | +19.033 | 0:45.981 | Cape Girardeau, MO | Honda CRF450R | |
| 8 |  Benny Bloss | +22.711 | 0:45.928 | Oak Grove, MO | Honda CRF450R | |
| 9 |  Max Anstie | +25.994 | 0:46.908 | Newbury, England  | Suzuki RM-Z450 | |
| 10 |  Tyler Bowers | +26.276 | 0:47.067 | Danville, KY | Kawasaki KX450 | |
| 11 |  Cade Clason | +27.574 | 0:47.392 | Arcadia, OH | Kawasaki KX450 | |
| 12 |  Fredrik Noren | +32.574 | 0:47.785 | Lidköping  | Kawasaki KX450 | |
| 13 |  Logan Karnow | +38.651 | 0:48.371 | Vermilion, OH | Kawasaki KX450 | |
| 14 |  Carlen Gardner | +44.034 | 0:47.488 | Paso Robles, CA | Honda CRF450R | |
| 15 |  Lane Shaw | +46.677 | 0:48.427 | Alvin, TX | KTM 250 SX-F | |
| 16 |  Hunter Schlosser | +49.308 | 0:48.843 | El Paso, TX | Yamaha YZ250F | |
| 17 |  Ronnie Stewart | 9 Laps | 0:48.909 | Easton, PA | GasGas MC 450F | |
| 18 |  Jeremy Smith | +01.320 | 0:48.838 | Marmora, NJ | Kawasaki KX450 | |
| 19 |  Josh Cartwright | +04.269 | 0:49.000 | Tallahassee, FL | Kawasaki KX450 | |
| 20 |  Marvin Musquin | 7 Laps | 0:45.111 | La Reole  | KTM 450 SX-F |
