| Sponsor | Year | 125 Pro Expert – Later 250 Pro Expert | 250 Pro Expert – Later Open Pro Expert | 500 Pro Expert | Mini Bike Intermission | Fast Fifties | Kessler Cup | Top Gun Mini Shootout | Ironman Classic |
| 1977 | |||||||||
| Forsgate | 1978 | ||||||||
| Forsgate | 1979 | Tony Masciarelli | Henry Warner | Mickey Kessler | Gene Gentsch | x | x | x | x |
| Forsgate | 1980 | Pat Maroney | Mickey Kessler | Mickey Kessler | Tony Masciarelli | x | x | x | x |
| Kawasaki | 1981 | x | x | x | x | ||||
| Kawasaki | 1982 | Billy Liles | Billy Liles | Mickey Kessler | Mickey Kessler | x | x | x | x |
| Kawasaki | 1983 | Gene Gentsch | Mickey Kessler | Mickey Kessler | x | x | x | x | |
| Kawasaki | 1984 | Billy Liles | Mickey Kessler | Mickey Kessler | Billy Liles | x | x | x | x |
| Kawasaki | 1985 | Eddie Warren | Billy Liles | Billy Liles | John Thompson | x | x | x | x |
| Kawasaki | 1986 | Eddie Warren | Donny Schmidt | JoJo Keller | Chris Coleman | x | x | x | x |
| Kawasaki | 1987 | Joe Waddington | Jeff Ward | Eddie Warren | x | x | x | x | |
| Kawasaki | 1988 | Johnny O’Mara | Mike Pascarella | Ron Lechien | x | x | x | x | |
| Kawasaki | 1989 | Guy Cooper | Guy Cooper | Chris Coleman | x | x | x | x | x |
| Kawasaki | 1990 | Ron Tichenor | John Dowd | Jeff Matiasevich | x | x | x | x | x |
| Kawasaki | 1991 | Doug Henry | Ron Tichenor | Gene Naumec | x | ||||
| Kawasaki | 1992 | Tim Ferry | Robbie Reynard | Mike Kiedrowski | x | ||||
| Kawasaki | 1993 | Tim Ferry | Mike Kiedrowski | x | x | x | |||
| Kawasaki | 1994 | John Dowd | Tim Ferry | x | x | x | Ricky Carmichael | ||
| Kawasaki | 1995 | Barry Carsten | Ryan Hughes | x | x | x | x | Chris Hunter | Charles Dunaway |
| Kawasaki | 1996 | Damon Huffman | Jeff Emig | x | x | x | x | Josh Woods | Jim Wilson |
| Kawasaki | 1997 | Damon Huffman | Jeff Emig | x | x | x | x | Paul Veracka | Josh Woods |
| Kawasaki | 1998 | Nick Wey | Ryan Hughes | x | x | x | Gavin Gracyk | Josh Woods | |
| Kawasaki | 1999 | Barry Carsten | Ricky Carmichael | x | x | x | Nicholas Adams | ||
| Kawasaki | 2000 | Barry Carsten | Ricky Carmichael | x | x | x | Tyler Bowers | Kyle Chisholm | Ryan Davis |
| Kawasaki | 2001 | James Stewart | Steve Lamson | x | x | x | Bailey Cotton | Kyle Chisholm | Nicholas Adams |
| Kawasaki | 2002 | Josh Woods | Ezra Lusk | x | x | x | Justin Barcia | Jason Lawrence | Nicholas Adams |
| Kawasaki | 2003 | Donnie McGourty | Jeff Emig | x | x | x | |||
| Kawasaki | 2004 | Kyle Chisholm | Ryan Sipes | x | x | x | Blake Baggett | Zach Osborne | Jason Lawrence |
| Kawasaki | 2005 | Kyle Chisholm | Kyle Chisholm | x | x | x | Nick Desiderio | Justin Barcia | Sean Hackley |
| Kawasaki | 2006 | Kyle Chisholm | Phil Nicoletti | x | x | x | Zach Bell | Frankie Lettieri | Michael Hall |
| Kawasaki | 2007 | Robby Marshall | PJ Larsen | x | x | x | Jon Borello | AJ Catanzaro | Lowell Spangler |
| Kawasaki | 2008 | Taylor Futrell | Phil Nicoletti | x | x | x | Alexander Frye | Zach Bell | Cody Robbins |
| Kawasaki | 2009 | Robby Marshall | Lowell Spangler | x | x | x | Jake Pinhancos | Cooper Webb | Jason Brooks |
| Kawasaki | 2010 | Jimmy Decotis | Lowell Spangler | x | x | x | Jake Beaudoin | Mitchell Harrison | Joey Peters |
| Kawasaki | 2011 | Jimmy Decotis | Joshua Clark | x | x | x | David Milana | Austin Forkner | Jesse Pierce |
| Kawasaki | 2012 | Luke Renzland | Joshua Clark | x | x | x | Devin Kusmider | Austin Forkner | Bobby Piazza |
| Kawasaki | 2013 | Luke Renzland | Joshua Clark | x | x | Ryder Cooper | Chase Yentzer | Corey Carsten | Alexander Frye |
| Kawasaki | 2014 | Dakota Kessler | Joey Peters | x | x | Joey Arico | Austin Kapoukranidis | Chase Fasnacht | Brandon Hartranft |
| Kawasaki | 2015 | Justin Cooper | Justin Cooper | x | x | Mason Tucker | Nicholas Romano | Jack Rogers | Brandon Hartranft |
| Kawasaki | 2016 | Justin Cooper | Justin Cooper | x | x | Canyon Richards | Tyler Devers | Gavin Towers | Jake Pinhancos |
| Kawasaki | 2017 | Aaron Lampi | Aaron Lampi | x | x | Canyon Richards | Joseph Rainone | Bryce Shelly | Seth Hammaker |
| Kawasaki | 2018 | Jyire Mitchell | Coty Schock | x | x | Kevyn Depinho | Anthony Hill | Bryce Shelly | Hunter Calle |
| Kawasaki | 2019 | Coty Schock | Bobby Piazza | x | x | Travis Schneider | Canyon Richards | Drew Adams | Orion Gregory |
| Kawasaki | 2020 | Marshall Weltin | Bobby Piazza | x | x | Wyatt Ptak | Canyon Richards | Drew Adams | Gage Stine |
| Kawasaki | 2021 | Gage Stine | Cody Groves | x | x | Colton Schmidt | Jonathan Getz | Canyon Richards | Gavin Towers |
