Since 1972 Twin Air supported over 300 World Champions. Check out all the world champions on Twin Air in the different classes.

MX1 / MXGP
1972 Joël Robert Belgium Suzuki 250cc
1973 Hakan Andersson Sweden Yamaha 250cc
1974 Guennady Moisseev RussiaKTM RussiaKTM 250cc
1975 Harrie Everts Belgium Puch 250cc
1976 Heikki Mikkola Finland Husqvarna 250cc
1977 Guennady Moisseev Russia KTM 250cc
1978 Guennady Moisseev Russia KTM 250cc
1980 George Jobé Belgium Suzuki 250cc
1983 George Jobé Belgium Suzuki 250cc
1984 Heinz Kinigardner Austria KTM 250cc
1985 Heinz Kinigardner Austria KTM 250cc
1987 Eric Geboers Belgium Honda 250cc
1989 Jean Michel Bayle France Honda 250cc
1990 Alessandro Puzar Italy Suzuki 250cc
1992 Donny Schmit USA Yamaha 250cc
1993 Greg Albertyn South Africa Honda 250cc
1994 Greg Albertyn South Africa Suzuki 250cc
1995 Stefan Everts Belgium Kawasaki 250cc
1997 Stefan Everts Belgium Honda 250cc
1998 Sebastien Tortelli France Kawasaki 250cc
1999 Frederic Bolley France Honda 250cc
2001 Mickaël Pichon France Suzuki 250cc
2002 Mickaël Pichon France Suzuki 250cc
2003 Stefan Everts Belgium Yamaha 450cc
2004 Stefan Everts Belgium Yamaha 450cc
2005 Stefan Everts Belgium Yamaha 450cc
2006 Stefan Everts Belgium Yamaha 450cc
2007 Steve Ramon Belgium Suzuki 450cc
2016 Tim Gajser Slovenia Honda 450cc
2018 Jeffrey Herlings The Netherlands KTM 450cc
2019 Tim Gajser Slovenia Honda 450cc
2020 Tim Gajser Slovenia Honda 450cc
2021 Jeffrey Herlings The Netherlands KTM 450cc
MX2
1973 André Malherbe Belgium Zundapp 125cc
1974 André Malherbe Belgium Zundapp 125cc
1975 Gaston Rahier Belgium Suzuki 125cc
1976 Gaston Rahier Belgium Suzuki 125cc
1977 Gaston Rahier Belgium Suzuki 125cc
1978 Akira Watanabe Japan Suzuki 125cc
1979 Harrie Everts Belgium Suzuki 125cc
1980 Harrie Everts Belgium Suzuki 125cc
1981 Harrie Everts Belgium Suzuki 125cc
1982 Eric Geboers Belgium Suzuki 125cc
1983 Eric Geboers Belgium Suzuki 125cc
1984 Michelle Rinaldi Italy Suzuki 125cc
1985 Pekka Vehkonen Finland Cagiva 125cc
1986 Dave Strijbos The Netherlands Cagiva 125cc
1988 Jean Michel Bayle France Honda 125cc
1989 Trampas Parker USA KTM 125cc
1990 Donny Schmit USA Suzuki 125cc
1991 Stefan Everts Belgium Suzuki 125cc
1992 Greg Albertyn South Africa Honda 125cc
1993 Pedro Tragter The Netherlands Suzuki 125cc
1994 Bob Moore USA Yamaha 125cc
1995 Alessandro Puzar Italy Honda 125cc
1996 Sebastien Tortelli France Kawasaki 125cc
1997 Alessio Chiodi Italy Yamaha 125cc
1998 Alessio Chiodi Italy Husqvarna 125cc
2000 Grant Langston South Africa KTM 125cc
2001 James Dobb United Kingdom KTM 125cc
2002 MickaeI Maschio France Kawasaki 125cc
2003 Steve Ramon Belgium KTM 125cc
2004 Ben Townley New Zealand KTM 250cc
2005 Antonio Cairoli Italy Yamaha 250cc
2007 Antonio Cairoli Italy Yamaha 250cc
2008 Tyla Rattray South Africa KTM 250cc
2009 Marvin Musquin France KTM 250cc
2010 Marvin Musquin France KTM 250cc
2011 Ken Roczen Germany KTM 250cc
2012 Jeffrey Herlings The Netherlands KTM 250cc
2013 Jeffrey Herlings The Netherlands KTM 250cc
2014 Jordi Tixler France Honda 250cc
2015 Tim Gajser Slovenia KTM 250cc
2016 Jeffrey Herlings The Netherlands KTM 250cc
2017 Pauls Jonass Latvia KTM 250cc
2020 Tom Vialle France KTM 250cc
2021 Maxime Renaux France Yamaha 250cc
MX3
1972 Roger de Coster Belgium Suzuki 500cc
1973 Roger de Coster Belgium Suzuki 500cc
1974 Heikki Mikkola Finland Husqvarna 500cc
1975 Roger de Coster Belgium Suzuki 500cc
1976 Roger de Coster Belgium Suzuki 500cc
1981 André Malherbe Belgium Honda 500cc
1982 Brad Lackey USA Suzuki 500cc
1984 André Malherbe Belgium Honda 500cc
1985 David Thorpe United Kingdom Honda 500cc
1986 David Thorpe United Kingdom Honda 500cc
1987 George Jobé Belgium Honda 500cc
1988 Eric Geboers Belgium Honda 500cc
1989 David Thorpe United Kingdom Honda 500cc
1990 Eric Geboers Belgium Honda 500cc
1991 George Jobé Belgium Honda 500cc
1992 George Jobé Belgium Honda 500cc
1993 Jacky Martens Belgium Husqvarna 500cc
1994 Marcus Hansson Sweden Honda 500cc
1996 Shayne King New Zealand KTM 500cc
1999 Andrea Bartolini Italy Yamaha 500cc
2001 Stefan Everts Belgium Yamaha 450cc
2002 Stefan Everts Belgium Yamaha 450cc
2009 Pierre Renet France Suzuki 450cc
2010 Carlos Campano Spain Yamaha 450cc
2011 Julien Bill Switzerland Honda 450cc
2013 Klemen Gercar Slovenia Honda 450cc
MX WOMEN
2005 Stephanie Laier Germany KTM 125cc
2006 Katherine Prumm New Zealand Kawasaki 250cc
2007 Katherine Prumm New Zealand Kawasaki 250cc
2008 Livia Lancelot France Kawasaki 250cc
2009 Stephanie Laier Germany KTM 250cc
2010 Stephanie Laier Germany KTM 250cc
2011 Stephanie Laier Germany KTM 250cc
2019 Courtney Duncan New-Zealand Kawasaki 250cc
2020 Courtney Duncan New-Zealand Kawasaki 250cc
2021 Courtney Duncan New-Zealand Kawasaki 250cc
AMA SUPERCROSS TITLES
1986 Rick Johnson Honda
1988 Rick Johnson Honda
1989 Jeff Stanton Honda
1990 Jeff Stanton Honda
1991 Jean Michel Bayle Honda
1992 Jeff Stanton Honda
1993 Jeremy McGrath Honda
1994 Jeremy McGrath Honda
1995 Jeremy McGrath Honda
1996 Jeremy McGrath Honda
2002 Ricky Carmichael Honda
2003 Ricky Carmichael Honda
2005 Ricky Carmichael Suzuki
2006 Ricky Carmichael Suzuki
2010 Ryan Dungey Suzuki
2015 Ryan Dungey KTM
2016 Ryan Dungey KTM
2017 Ryan Dungey KTM
2018 Jason Anderson Husqvarna
2019 Cooper Webb KTM
2021 Cooper Webb KTM
2022 Eli Tomac Star Yamaha
AMA SUPERCROSS WEST TITLES
1987 Willie Surratt Suzuki
1990 Ty Davis Honda
1991 Jeremy McGrath Pro Circuit Honda
1992 Jeremy McGrath Pro Circuit Honda
1993 Jimmy Gaddis Kawasaki
1994 Damon Huffman Suzuki
1995 Damon Huffman Suzuki
1999 Nathan Ramsey Kawasaki
2000 Shae Bentley Kawasaki
2001 Ernesto Fonseca Yamaha
2002 Travis Preston Honda
2004 Ivan Tedesco Kawasaki
2005 Ivan Tedesco Kawasaki
2006 Grant Langston Kawasaki
2007 Ryan Villopoto Kawasaki
2009 Ryan Dungey Suzuki
2010 Jake Weimer Kawasaki
2011 Broc Tickle Kawasaki
2012 Eli Tomac Honda
2013 Ken Roczen KTM
2016 Cooper Webb Yamaha
2017 Justin Hill Kawasaki
2018 Aaron Plessinger Yamaha
2019 Dylan Ferrandis Yamaha
2020 Dylan Ferrandis Yamaha
2021 Justin Cooper Yamaha
2022 Christian Craig Star Yamaha 
AMA SUPERCROSS EAST TITLES
1985 Eddie Warren Honda
1986 Keith Turpin Honda
1987 Ronnie Tichenor Suzuki
1988 Todd DeHoop Suzuki
1990 Denny Stephenson Suzuki
1991 Brian Swink Pro Circuit Honda
1992 Brian Swink Pro Circuit Honda
1993 Doug Henry Honda
1994 Ezra Lusk Suzuki
1995 Mickael Pichon Kawasaki
1996 Mickael Pichon Kawasaki
1997 Timmy Ferry Suzuki
1998 Ricky Carmichael Kawasaki
1999 Ernesto Fonseca Yamaha
2000 Stephane Roncada Kawasaki
2001 Travis Pastrana Suzuki
2002 Chad Reed Yamaha
2003 Brandon Jesseman Suzuki
2005 Grant Langston Kawasaki
2006 Davi Millsaps Honda
2007 Ben Townley Kawasaki
2008 Trey Canard Honda
2009 Christophe Pourcel Kawasaki
2010 Christophe Pourcel Kawasaki
2011 Justin Barcia Honda
2012 Justin Barcia Honda
2013 Wil Hahn Honda
2014 Justin Bogle Honda
2015 Marvin Musquin KTM
2016 Malcolm Stewart Honda
2017 Zach Osborne Husqvarna
2018 Zach Osborne Husqvarna
2019 Chase Sexton Honda
2021 Colt Nichols Yamaha
2022 Jett Lawrence Honda HRC
AMA MOTOCROSS 250/450F
1982 Darrell Schultz USA Honda 500cc
1982 Donnie Hansen USA Honda 250cc
1983 David Bailey USA Honda 250cc
1984 David Bailey USA Honda 500cc
1986 David Bailey USA Honda 500cc
1986 Rick Johnson USA Honda 250cc
1987 Rick Johnson USA Honda 500cc
1987 Rick Johnson USA Honda 250cc
1988 Rick Johnson USA Honda  
1989 Jeff Stanton USA Honda 250cc
1990 Jeff Stanton USAHonda 250cc
1991 Jean-Michel Bayle France Honda  
1991 Jean-Michel Bayle France Honda 250cc
1992 Jeff Stanton USA Honda 250cc
1995 Jeremy McGrath USA Honda 250cc
1999 Greg Albertyn South-Africa Suzuki 250cc
2002 Ricky Carmichael USA Honda 250cc
2003 Ricky Carmichael USA Honda 250cc
2004 Ricky Carmichael USA Honda 250cc
2005 Ricky Carmichael USA Suzuki 250cc
2006 Ricky Carmichael USA Suzuki MX Class
2009 Chad Reed Australia Suzuki 450 Class
2010 Ryan Dungey USA Suzuki 450 Class
2012 Ryan Dungey USA KTM 450 Class
2014 Ken Roczen Germany KTM 450 Class
2015 Ryan Dungey USA KTM 450 Class
2016 Ken Roczen Germany Suzuki 450 Class
2020 Zach Osborne USA Husqvarna 450 Class
2021 Dylan Ferrandis France Yamaha 450 Class
AMA MOTOCROSS 125/250F
1980 Mark Barnett USA Suzuki 125cc
1981 Mark Barnett USA Suzuki 125cc
1982 Mark Barnett USA Suzuki 125cc
1983 Johnny O'Mara USA Honda 125cc
1985 Ron Lechien USA Honda 125cc
1986 Micky Dymond USA Honda 125cc
1987 Micky Dymond USA Honda 125cc
1988 George Holland USA Honda 125cc
1989 Mike Kiedrowski USA Honda 125cc
1990 Guy Cooper USA Suzuki 125cc
1993 Doug Henry USA Honda 125cc
1994 Doug Henry USA Honda 125cc
1995 Steve Lamson USA Honda 125cc
1996 Steve Lamson USA Honda 125cc
1997 Ricky Carmichael USA Kawasaki 125cc
1998 Ricky Carmichael USA Kawasaki 125cc
1999 Ricky Carmichael USA Kawasaki 125cc
2000 Travis Pastrana USA Suzuki 125cc
2001 Mike Brown USA Kawasaki 125cc
2003 Grant Langston South-Africa KTM 125cc
2005 Ivan Tedesco USA Kawasaki 125cc
2006 Ryan Villopoto USA Kawasaki MX Lites
2007 Ryan Villopoto USA Kawasaki MX Lites
2008 Ryan Villopoto USA Kawasaki MX Lites
2009 Ryan Dungey USA Suzuki 250 Class
2010 Trey Canard USA Honda 250 Class
2011 Dean Wilson United Kingdom Kawasaki 250 Class
2012 Blake Baggett USA Kawasaki 250 Class
2013 Eli Tomac USA Honda 250 Class
2016 Cooper Webb USA Yamaha 250 Class
2017 Zach Osborne USA Husqvarna 250 Class
2018 Aaron Plessinger USA Yamaha 250 Class
2019 Adam Cianciarulo USA Kawasaki 250 Class
2020 Dylan Ferrandis France Yamaha 250 Class
2021 Jett Lawrence Australia Honda 250 Class