2018 TENTATIVE National Classes

Revised 1.8.18
Red Denotes Changes for 2018


1.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.WMX201-450cc 4-Stk
4.Open 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.Production A201-450cc 4-StkCheck
11.Production B201-450cc 4-StkCheck
12.Production C201-450cc 4-StkCheck
13.College (16-24) (Sportsman)201cc-Open
14.Junior 25+201cc-Open
15.Veteran 30+ (Sportsman)201cc-Open
16.Veteran 30+ B201cc-Open
17.Veteran 30+ C201cc-Open
18.Senior 40+201cc-Open
19.Senior 40+ B201cc-Open
20.Senior 40+ C201cc-Open
21.Masters 50+201cc-Open
22.Women 25+201-450cc 4-Stk


23.Youth All-Star (13-15)91-200cc 2-Stk, 91-300cc 4-Stk
24.250 Mod (13-17)91-200cc 2-Stk, 91-250cc 4-Stk
251-300cc 4-Stk*Check
25.Schoolboy Sr. (14-17)91-300cc 4-Stk;
301-400cc 4-Stk*Check
26.Schoolboy Jr. (13-15)91-200cc 2-Stk; 91-300cc 4-StkCheck
27.Super Mini (12-15)71-105cc 2-Stk; 75-150cc 4-Stk
28.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
29.Girls (8-13)70-90cc 2-Stk;
125cc 4-Stk*Check
30.125 (8-15)90-125cc 4-StkCheck
31.90 Open Sr. (12-15)71-90cc 2-Stk; 125cc 4-Stk
32.90 Open Jr. (8-11)71-90cc 2-Stk; 125cc 4-Stk
33.90 Automatic (8-13)71-90cc 2-Stk; 125cc 4-Stk; Automatic/CVT/Single SpeedCheck
34.90 Shifter (12-15)71-90cc 2-Stk; 125cc 4-Stk; Shifter
35.90 Shifter (8-11)71-90cc 2-Stk; 125cc 4-Stk; Shifter
36.70 Open (6-11)51-70cc
37.70 Automatic (6-11)51-70cc; Automatic/CVT/Single SpeedCheck
38.70 Shifter (6-11)51-70cc; Shifter
39.50 Open (4-8)0-50cc
40.50 CVT (4-8)0-50cc; Belt-DriveCheck
41.50 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.

Revised 1.8.18
Red Denotes Changes for 2018