The opening round (Sacramento) will be held on 19 May (Saturday).
Please stay tuned.
The AMA Motocrosss Championship, a series run by the AMA (American Motorcyclist Association), is America's top motocross racing series. The season consists of 12 rounds, with each class running two races of 30 minutes plus two laps. Races are held on outdoor dirt courses with man-made technical sections. The two classes are Motocross (4-stroke 450cc machines, or 2-stroke 250cc machines) and Motocross Lites (4-stroke 250cc machines, or 2-stroke 125cc machines). The machines are production motocross racers featuring special tuning. Along with the World Motocross Championship, AMA MX represents the pinnacle of motorcross racing, and like the AMA Supercross Championship attracts top riders from around the world.
Monster Energy Kawasaki
Ryan Villopoto #1
[Motocross]
Date of Birth: 13 August, 1988
Nationality: American
| 2011 | 1st AMA Supercross 1st AMA Motocross |
| 2010 | 4th AMA Supercross |
| 2009 | 6th AMA Supercross 24th AMA Motocross |
| 2008 | 2nd AMA Supercross Lites East 1st AMA Motocross Lites |
| 2007 | 1st AMA Supercross Lites West 1st AMA Motocross Lites |
| 2006 | 3rd AMA Supercross Lites West 1st AMA Motocross Lites |
| 2005 | AMA Horizon Award Winner |

Jake Weimer #21
[Motocross]
Date of Birth: 17 December, 1987
Nationality: American
| 2011 | 26th AMA Supercross 6th AMA Motocross |
| 2010 | 1st AMA Supercross Lites West 11th AMA Motocross Lites |
| 2009 | 2nd AMA Supercross Lites West 4th AMA Motocross Lites |
| 2008 | 15th AMA Supercross Lites West 5th AMA Motocross Lites |
| 2007 | 4th AMA Supercross Lites West 6th AMA Motocross Lites |
| 2006 | 13th AMA Supercross Lites West 31th AMA Motocross Lites |

Monster Energy Pro Circuit Kawasaki
Broc Tickle #25
[Motocross]
Date of Birth: 21 November, 1989
Nationality: American
| 2011 | 1st AMA Supercross Lites West 7th AMA Motocross Lites |
| 2010 | 4th AMA Supercross Lites West 7th AMA Motocross Lites |
| 2009 | 12th AMA Supercross Lites East 7th AMA Motocross Lites |
| 2008 | 14th AMA Motocross Lites |
| 2007 | 15th AMA Supercross Lites East 10th AMA Motocross Lites |

Dean Wilson #15
[Motocross Lites]
Date of Birth: 28 December, 1991
Nationality: British
| 2011 | 2nd AMA Supercross Lites East 1st AMA Motocross Lites |
| 2010 | 6th AMA Supercross Lites East 4th AMA Motocross Lites |
| 2009 | AMA Horizon Award Winner |

Tyla Rattray #28
[Motocross Lites]
Date of Birth: 12 November, 1985
Nationality: South African
| 2011 | 7th AMA Supercross Lites West 2nd AMA Motocross Lites |
| 2010 | 2nd AMA Motocross Lites |
| 2009 | 9th AMA Motocross Lites |
| 2008 | 1st Motocross World Championship MX2 |
| 2007 | 4th Motocross World Championship MX2 |
| 2006 | 4th Motocross World Championship MX2 |
| 2005 | 15th Motocross World Championship MX2 |
| 2004 | 2rd Motocross World Championship MX2 |
Blake Baggett #12
[Motocross Lites]
Date of Birth: 3 January, 1992
Nationality: American
| 2011 | 4th AMA Supercross Lites East 3rd AMA Motocross Lites |
| 2010 | 5th AMA Supercross Lites East |
| 2009 | 23rd AMA Motocross Lites |

Darryn Durham #35
[Motocross Lites]
Date of Birth: 24 May, 1989
Nationality: American
| 2011 | 16th AMA Supercross Lites East 10th AMA Motocross Lites |
| 2010 | 24th AMA Supercross Lites East 13th AMA Motocross Lites |
| 2009 | 10th AMA Supercross Lites East 12th AMA Motocross Lites |
| 2008 | AMA Horizon Award Winner |
KX450F
Kawasaki's pinnacle 4-stroke motocrosser, the KX450F was designed to "put race victories within the grasp of expert riders." The fuel-injected, liquid-cooled 4-stroke DOHC 4-valve engine offers seamless power from low- to high-rpm. And a chassis with idealised rigidity balance ensures the superior rear wheel traction and front end feel for precise cornering performance. Careful tuning further elevates the performance of the production KX450F, making the race machine even more potent on the track.
KX250F
The KX250F was designed to "put race victories within the grasp of expert riders." The fuel-injected, liquid-cooled 4-stroke DOHC 4-valve engine offers elevated potential care of increased high-rpm performance and improved over-rev characteristics. The highly rigid aluminium frame, equipped with the first production-use SFF (Separate Function front Fork), delivers unflappable high-speed stability. Through careful tuning, the race machine further elevates the performance offered by the production KX250F, increasing its already high circuit prowess.
2012 AMA Motocross Championship - Motocross
| Pos. | No. | Rider | Machine | Total | R 1 05/19 |
R 2 05/26 |
R 3 06/02 |
R 4 06/09 |
R 5 06/16 |
R 6 07/07 |
R 7 07/14 |
R 8 07/21 |
R 9 08/11 |
R10 08/18 |
R11 09/01 |
R12 09/08 |
|---|
2012 AMA Motocross Championship - Motocross Lites
| Pos. | No. | Rider | Machine | Total | R 1 05/19 |
R 2 05/26 |
R 3 06/02 |
R 4 06/09 |
R 5 06/16 |
R 6 07/07 |
R 7 07/14 |
R 8 07/21 |
R 9 08/11 |
R10 08/18 |
R11 09/01 |
R12 09/08 |
|---|






