Progressive American Flat Track
The classes of flat track
Since 1954, a season of flat track has decided a champion. The classes around that championship changed as the bikes changed. For 2027 the classes are SuperTwins, Singles, ProSport 450 and Royal Enfield BTR.
The 2027 classes
- SuperTwins Since 2017 The premier class. It started in 2017 as AFT Twins, took the name SuperTwins in 2020, and races again in 2027. See SuperTwins
- Singles Since 2017 The 450 class, carried on from Pro Singles and back again in 2027. See Singles
- ProSport 450 Since 2026 A class for younger riders moving up. It began in 2026 and races again in 2027. See ProSport 450
- Royal Enfield BTR Since 2020 Royal Enfield's class for women, on bikes built from the INT 650. It has raced at selected rounds since 2020 and returns in 2027. See Royal Enfield BTR
1954 to 2008
The Grand National Championship
One title a season, won on miles, half-miles, short tracks, TTs and road courses.
The AMA built the Grand National Championship in 1954. One rider gathered points on five kinds of track, four of them dirt and one a paved road course. For fifty years that single title was the season. Alongside it, from the late 1980s, came smaller national classes: a 600, the Harley-Davidson 883 Sportster, Hot Shoe and a short twin-cylinder experiment called SuperTracker.
1954: the championship begins, on five kinds of track
1969: overhead-valve engines step up to 750cc
1986: dirt track and road racing become two championships
2006: the one title splits into Twins and Singles
Grand National Championship 1954–2005
The one title for the whole season, raced on miles, half-miles, short tracks, TTs and, until 1986, a road course.
600 National 1988–1996
A 600cc support class that ran beside the Grand National.
Harley-Davidson 883 Sportster 1993–2005
A class for nearly street-legal Sportsters.
Hot Shoe 1997–2009
A national series of its own, with champions listed from 1997 to 2009.
SuperTracker 1999–2001
A short development series for twins built to a new 1000cc formula.
2009 to 2016
AMA Pro Flat Track
Twins and Singles ran as two expert titles, and in 2010 the overall championship came back.
In 2009 the series took the name AMA Pro Flat Track. Twins and Singles were already the two expert classes, split apart in 2006, and a new class called Pro Singles gave young riders a 450 to learn on. In 2010 the overall championship came back.
2009: Pro Singles begins, for young riders on 450s
2010: the overall championship returns
2015: the classes are renamed GNC1 and GNC2
Grand National Singles 2006–2016
The expert singles class, raced on short tracks and TTs.
Champions
- Henry Wiles won three seasons of it.
Grand National Twins 2006–2016
The expert twins class, raced on miles and half-miles.
Champions
- Bryan Smith won five seasons of it.
- Jared Mees won two.
Pro Singles 2009–2016
A support class for younger riders on 450s, begun in 2009. Today's Singles class carries this line on.
Champions
- Brad Baker won the first season, 2009.
The overall title 2010–2016
The championship came back, scored by adding every Expert Twins and Expert Singles round.
Champions
- Jake Johnson won the first two seasons back.
- Jared Mees won three.
Pro Twins 2013–2016
The twins class that ran under Pro Singles at the bigger tracks, from 2013.
Champions
- Shayna Texter won the first season, 2013.
- Ryan Wells won the last, 2016.
2017 on
American Flat Track
SuperTwins and Singles at the top, with classes for younger riders and for women.
In 2017 the series became American Flat Track. Twins and Singles were the two classes the season turned on, and in 2020 Twins took the name SuperTwins. That same year Royal Enfield's Build. Train. Race. program, a class for women on bikes built from the INT 650, started racing at selected rounds. For 2027 the classes are SuperTwins, Singles, ProSport 450 and Royal Enfield BTR.
2017: Twins and Singles become the two classes fans follow
2020: Twins becomes SuperTwins, and Royal Enfield BTR joins
2026: ProSport 450 and StreetTrackers begin
2027: SuperTwins, Singles, ProSport 450 and Royal Enfield BTR
Singles Since 2017 2027
The 450 class, carried on from Pro Singles and back again in 2027.
Champions
- Kody Kopp won three seasons.
- Tom Drane won 2025 and 2026.
SuperTwins Since 2017 2027
The premier class. It started in 2017 as AFT Twins, took the name SuperTwins in 2020, and races again in 2027.
Champions
- Jared Mees won six seasons.
- Dallas Daniels won 2025 and 2026.
Production Twins 2018–2022
A class for street-bike twins, 649cc to 850cc, from 2018 through 2022.
Champions
- Cory Texter won two seasons of it.
- Jesse Janisch won the last, 2022.
Royal Enfield BTR Since 2020 2027
Royal Enfield's class for women, on bikes built from the INT 650. It has raced at selected rounds since 2020 and returns in 2027.
Champions
- Jaycee Jones won 2022.
- Emma Gottsch won 2026.
AdventureTrackers 2024–2026
Near-stock adventure bikes over 1000cc, raced from 2024 through 2026.
Champions
- Dan Bromley won 2025.
- Austin Luczak won 2026.
ProSport 450 Since 2026 2027
A class for younger riders moving up. It began in 2026 and races again in 2027.
Champions
- Adam Costan-Wood won the 2026 season.
StreetTrackers 2026
A new class for 2026.
Sources
The season spans are the AMA Pro Racing season records. Champions named here are the riders at the top of those seasons. Hot Shoe, the 600 National, the Harley-Davidson 883 Sportster and SuperTracker are the year ranges in American Flat Track's 2019 media guide and on its history page. The 1969 engine change is from Cycle News. The 2027 classes were set by AMA Pro Racing and are not yet announced. The photograph of Dallas Daniels, No. 32, at Daytona in 2025 is by Kristen Lassen for AMA Pro Racing. The photographs of Bubba Shobert, 1986, Scott Parker, 1998, Jared Mees, 2009, and Henry Wiles at the Peoria TT in 2009 are by Dave Hoenig. The photograph of Joe Kopp, 2000, is by Dave Hoenig. The 2016 pack is by Brian J Nelson, and the start at the Lima Half-Mile on June 25, 2016, is by Chris Hinkle.
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