National Champions
References:
| Year | 500cc | 250cc | 125cc |
|---|---|---|---|
| 1972 | Brad Lackey (Kawasaki) | Gary Jones (Yamaha) | |
| 1973 | Pierre Karsmakers (Yamaha) | Gary Jones (Honda) | |
| 1974 | Jimmy Weinert (Kawasaki) | Gary Jones (Can-Am) | Marty Smith (Honda) |
| 1975 | Jimmy Weinert (Yamaha) | Tony DiStefano (Suzuki) | Marty Smith (Honda) |
| 1976 | Kent Howerton (Husqvarna) | Tony DiStefano (Suzuki) | Bob Hannah (Yamaha) |
| 1977 | Marty Smith (Honda) | Tony DiStefano (Suzuki) | Broc Glover (Yamaha) |
| 1978 | Rick Burgett (Yamaha) | Bob Hannah (Yamaha) | Broc Glover (Yamaha) |
| 1979 | Danny LaPorte (Suzuki) | Bob Hannah (Yamaha) | Broc Glover (Yamaha) |
| 1980 | Chuck Sun (Honda) | Kent Howerton (Suzuki) | Mark Barnett (Suzuki) |
| 1981 | Broc Glover (Yamaha) | Kent Howerton (Suzuki) | Mark Barnett (Suzuki) |
| 1982 | Darrell Schultz (Honda) | Donnie Hansen (Honda) | Mark Barnett (Suzuki) |
| 1983 | Broc Glover (Yamaha) | David Bailey (Honda) | Johnny O'Mara (Honda) |
| 1984 | David Bailey (Honda) | Rick Johnson (Yamaha) | Jeff Ward (Kawasaki) |
| 1985 | Broc Glover (Yamaha) | Jeff Ward (Kawasaki) | Ron Lechien (Honda) |
| 1986 | David Bailey (Honda) | Rick Johnson (Honda) | Micky Dymond (Honda) |
| 1987 | Rick Johnson (Honda) | Rick Johnson (Honda) | Micky Dymond (Honda) |
| 1988 | Rick Johnson (Honda) | Jeff Ward (Kawasaki) | George Holland (Honda) |
| 1989 | Jeff Ward (Kawasaki) | Jeff Stanton (Honda) | Mike Kiedrowski (Honda) |
| 1990 | Jeff Ward (Kawasaki) | Jeff Stanton (Honda) | Guy Cooper (Suzuki) |
| 1991 | Jean-Michel Bayle (Honda) | Jean-Michel Bayle (Honda) | Mike Kiedrowski (Kawasaki) |
| 1992 | Mike Kiedrowski (Kawasaki) | Jeff Stanton (Honda) | Jeff Emig (Yamaha) |
| 1993 | Mike LaRocco (Kawasaki) | Mike Kiedrowski (Kawasaki) | Doug Henry (Honda) |
| Year | 250cc | 125cc | Women's MX |
|---|---|---|---|
| 1994 | Mike LaRocco (Kawasaki) | Doug Henry (Honda) | |
| 1995 | Jeremy McGrath (Honda) | Steve Lamson (Honda) | |
| 1996 | Jeff Emig (Kawasaki) | Steve Lamson (Honda) | Shelly Kann |
| 1997 | Jeff Emig (Kawasaki) | Ricky Carmichael (Kawasaki) | Tracy Fleming |
| 1998 | Doug Henry (Yamaha) | Ricky Carmichael (Kawasaki) | Dee Wood |
| 1999 | Greg Albertyn (Suzuki) | Ricky Carmichael (Kawasaki) | Stefy Bau |
| 2000 | Ricky Carmichael (Kawasaki) | Travis Pastrana (Suzuki) | Jessica Patterson |
| 2001 | Ricky Carmichael (Kawasaki) | Mike Brown (Kawasaki) | Tania Satchwell |
| 2002 | Ricky Carmichael (Honda) | James Stewart Jr. (Kawasaki) | Stefy Bau |
| 2003 | Ricky Carmichael (Honda) | Grant Langston (KTM) | Steffi Laier |
| 2004 | Ricky Carmichael (Honda) | James Stewart Jr. (Kawasaki) | Jessica Patterson |
| 2005 | Ricky Carmichael (Suzuki) | Ivan Tedesco (Kawasaki) | Jessica Patterson |
| Year | MX Class | MX Lites Class | Women's MX |
| 2006 | Ricky Carmichael (Suzuki) | Ryan Villopoto (Kawasaki) | Jessica Patterson |
| 2007 | Grant Langston (Yamaha) | Ryan Villopoto (Kawasaki) | Jessica Patterson |
| 2008 | James Stewart Jr. (Kawasaki) | Ryan Villopoto (Kawasaki) | Ashley Fiolek |
| Year | 450 Class | 250 Class | Women's MX |
| 2009 | Chad Reed (Suzuki) | Ryan Dungey (Suzuki) | Ashley Fiolek |
| 2010 | Ryan Dungey (Suzuki) | Trey Canard (Honda) | Jessica Patterson |
| 2011 | Ryan Villopoto (Kawasaki) | Dean Wilson (Kawasaki) | Ashley Fiolek (Honda) |
| 2012 | Ryan Dungey (Ktm) | Blake Baggett (Kawasaki) | Ashley Fiolek (Honda) |
Read more about this topic: AMA Motocross Championship
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—Tommaso Marinetti (1876–1944)
“While the Governor, and the Mayor, and countless officers of the Commonwealth are at large, the champions of liberty are imprisoned.”
—Henry David Thoreau (1817–1862)