2019 National Classes

Revised 5.22.19
Red Denotes Changes for 2019


1.AMA Pro: Riders must be 18 or older on date of event to compete350-450cc 4-StkCheck
2.Pro-Am: Riders must be 16 or orlder on date of event to compete91-265cc 2-Stk; 201-450cc 4-Stk
3.Production Stock Premier (Pro/Pro-Am/A)201-450cc 2-Stk/4-StkCheck


4.WMX201-450cc 4-Stk
5.Open Pro Sport (Pro-Am/A)201cc-Open
6.Open B201cc-Open
7.Open C201cc-Open
8.Production A201-450cc 4-StkCheck
9.Production B201-450cc 4-StkCheck
10.Production C201-450cc 4-StkCheck
11.Production Stock201-450cc 2-Stk/4-StkCheck
12.Production Stock C201-450cc 2-Stk/4-StkCheck
13.450 A201-450cc 4-Stk
14.450 B201-450cc 4-Stk
15.450 C201-450cc 4-Stk
16.College (16-24) (Sportsman)201cc-Open
17.Junior 25+201cc-Open
18.Veteran 30+ (Sportsman)201cc-Open
19.Veteran 30+B201cc-Open
20.Veteran 30+ C201cc-Open
21.Senior 40+201cc-Open
22.Senior 40+B201cc-Open
23.Senior 40+ C201cc-Open
24.Masters 50+201cc-Open
25.Women 25+201-450cc 4-Stk


26.Youth All-Star (13-15)91-200cc 2-Stk, 91-300cc 4-Stk
27.250 Mod (13-17)91-200cc 2-Stk, 91-250cc 4-Stk
251-300cc 4-Stk*Check
28.Schoolboy Sr. (14-17)91-200cc 2-Stk; 91-300cc 4-Stk;
301-400cc 4-Stk*Check
29.Schoolboy Jr. (12-15)71-105cc 2-Stk; 75-150cc 4-Stk
91-200cc 2-Stk*; 91-300cc 4-Stk*Check
12 yr old: 71-105cc 2-Stk; 75-150cc 4-Stk
30.Super Mini (12-15)71-105cc 2-Stk; 75-150cc 4-Stk
31.Schoolgirl (13-17)91-200cc 2-Stk; 91-300cc 4-Stk
301-400cc 4-Stk*Check
13 yr old: 91-200cc 2-Stk; 91-300cc 4-Stk
32.Girls (8-13)70-90cc 2-Stk;
125cc 4-Stk*Check
33.125 (8-15)90-125cc 4-StkCheck
34.90 Open Sr. (12-15)71-90cc 2-Stk; 125cc 4-Stk
35.90 Open Jr. (8-11)71-90cc 2-Stk; 125cc 4-Stk
36.90 Automatic (8-13)71-90cc 2-Stk; 125cc 4-Stk; Automatic/CVT/Single SpeedCheck
37.90 Shifter Sr. (12-15)71-90cc 2-Stk; 125cc 4-Stk; Shifter
38.90 Shifter Jr. (8-11)71-90cc 2-Stk; 125cc 4-Stk; Shifter
39.90 Production Stock (8-12)71-90cc 2-Stk; 125cc 4-StkCheck
40.70 Open (6-11)51-70cc
125cc 4-Stk*Check
41.70 Automatic (6-11)51-70cc; Automatic/CVT/Single SpeedCheck
42.70 Shifter (6-11)51-70cc; Shifter
125cc 4-Stk*Check
43.50 Open (4-8)0-50cc
44.50 CVT (4-8)0-50cc; Belt-DriveCheck
45.50 Automatic (4-6)0-50cc; Automatic/CVT/Single Speed
*Production Rule only applies to displacement designated.
**Laps are 'weather permitting'.   Pro/Pro-Am reference is to time, then laps.

Red Denotes Changes for 2019