National Classes


1.AMA Pro: AMA Pro Racing ATV License Required350-450cc 4-StkCheck
2.Pro-Am: Riders must be 16 or older on date of event to compete91-265cc 2-Stk; 201-450cc 4-Stk


3.WMX201-450cc 4-Stk
4.Pro Sport (Pro-Am/A)201cc-Open
5.Open B201cc-Open
6.Open C201cc-Open
7.450 A91-265cc 2-Stk; 201-450cc 4-Stk
8.450 B91-265cc 2-Stk; 201-450cc 4-Stk
9.450 C91-265cc 2-Stk; 201-450cc 4-Stk
10.450 B/C Limited91-265cc 2-Stk; 201-450cc 4-StkCheck
11.Production A201-450cc 4-StkCheck
12.Production B201-450cc 4-StkCheck
13.Production C201-450cc 4-StkCheck
14.College (16-24)201cc-Open
15.Junior 25+201cc-Open
16.Veteran 30+201cc-Open
17.Veteran 30+ C201cc-Open
18.Senior 40+201cc-Open
19.Senior 40+ B/C201cc-Open
20.Women (25+)201-450cc 4-Stk


21.Youth All-Star (13-15)91-200cc 2-Stk; 91-300cc 4-Stk
22.250 Mod (13-17)90-200cc 2-Stk; 91-250cc 4-Stk
--251-300cc 4-Stk*Check
23.Schoolboy Sr. (14-17)91-300cc 4-Stk; 301-400cc 4-Stk
--301-400cc 4-Stk*Check
24.Schoolboy Jr. (13-15)91-200cc 2-Stk, 91-300cc 4-StkCheck
25.Super Mini (12-15)71-105cc 2-Stk, 75-150cc 4-Stk
26.Schoolgirl (13-17)91-200cc 2-Stk; 91-300 4-Stk;
--301-400cc 4-Stk*Check
--13 yr old: 91-200cc 2-Stk; 91-300cc 4-Stk
27.Girls (8-13)70-90cc 2-Stk
--125cc 4-Stk*Check
28.125 (8-15)90-125cc 4-StkCheck
29.90 Open Sr. (12-15)71-90cc 2-Stk; 125cc 4-Stk
30.90 Open Jr. (8-11)71-90cc 2-Stk;125cc 4-Stk
31.90 Automatic (8-13)71-90cc 2-Stk; 125cc 4-Stk; Automatic/CVTCheck
32.90 Shifter (12-15)71-90cc 2-Stk; 125cc 4-Stk; Shifter
33.90 Shifter (8-11)71-90cc 2-Stk; 125cc 4-Stk; Shifter
34.70 Open (6-11)51-70cc
35.70 Automatic (6-11)51-70cc; Automatic/CVTCheck
36.70 Shifter (6-11)51-70cc; Shifter
37.50 Open (4-8)0-50cc
38.50 CVT (4-8)0-50cc - Belt-DriveCheck
39.50 Automatic (4-6)0-50cc; CVT/Single Speed
*Production Rule only applies to displacement designated.-