2024 CLASSES
51cc shaft drive limited
51cc 4-6 special limited
51cc 4-6 limited
51cc 7-8 limited
51cc open
E BIKE MINI 4-8 LTD
65cc 7-9
65cc 7-9 limited
65cc 10-11
65cc 10-11 limited
65cc open
85cc 9-11 limited
85cc 9-12 mod
85cc open
85cc C 9-15 **
85cc mini sr 1 12-14
85cc mini sr 2 13-15
Supermini 1 12-15
Supermini 2 13-16
125 C
125cc 12-17 b/c
250 PRO SPORT
250 B
250 B limited
250 C
250 C limited
250 C Jr 12-17 limited
Open pro sport
450 B
450 B limited
450 C
Vet 25+
Vet 40+
Vet Open
Girls 9-13 (65/85)
Girls 11-16
WMX - Big Bikes Only
Schoolboy 1 (12-17) b/c
Schoolboy 2 (12-17) b/c
College (18-24)
**Warrior Class
**85cc C 9-15
* riders who have received a ticket to an Amateur National or
received a podium finish at a Dirty 100 event are not eligible for this class
**Warrior Class
Class eligibility is for those veterans who have served or those currently serving the armed forces of the United States
MUST BE A VET MX MEMBER
Class Descriptions
51cc shaft drive limited
0-51cc
51cc 4-6 special limited
0-51cc
no pre mix
51cc 4-6 limited
0-51cc
no 12” front wheel
51cc 7-8 limited
0-51cc
51cc open LTD
E BIKE MINI 4-8 LTD
1 kWh battery
65cc 7-9
65cc 7-9 limited
65cc 10-11
65cc 10-11 limited
65cc open
85cc 9-11 limited
85cc 9-12 mod
85cc open (ages 9-15)
85cc C 9-15 **
85cc mini sr 1 12-14
(ALLOWED TO RUN BIG WHEEL 85)
85cc mini sr 2 13-15
(ALLOWED TO RUN BIG WHEEL 85)
Supermini 1 12-15
Supermini 2 13-16
125 C
125cc 12-17 b/c
250 PRO SPORT
250 B
250 B limited
250 C
250 C limited
250 C Jr 12-17 limited
Open pro sport
450 B
450 B limited
450 C
Vet 25+
Vet 40+
Vet Open
Girls 9-13 (65/85)
Girls 11-16 (Big Wheel and Supermini eligible)
WMX - Big Bikes Only
Schoolboy 1 (12-17) b/c
-2 stroke only, no 4 strokes
-125 or Supermini
Schoolboy 2 (12-17) b/c
-4 stroke or 2 stroke
College (18-24)
50 SHAFT/CRF 50/TTR 50/JR50
No “Jr 50” stood for
Suzuki JR 50 dirt bike
Like Crf 50 stands for
Honda Crf 50 dirt bike
Like ttr50 is a Yamaha bike
But of the child is on a cobra or KTM SX with 10” front and rear wheel and is a pre mix fuel “not injected” they ride in the 50 open class
AMA Sanctioned Event
All Information Subject to Change