2017 GLMX Class List
Red Class Change
Orange Class Name Change 3/4/16
Class Age Bike Payback Level Note
50 Jr 4-6 (AMA Class 1) Single speed auto. Max: wheelbase 36", wheel size 10", seat height 24", 14mm round intake.         Trophy  
50 Sr 7-8 (AMA Class 2) Single speed auto. Max: wheel-base 41", wheel size 12", 19mm round intake.         Trophy  
50 SS 4-8 (AMA Class 3) Single speed auto. *2 stroke oil-injected. Max: wheelbase 36", wheel size 10", seat height 22", 12mm round intake.                  *For non-qualifier events, Honda 50s will be allowed if shifter is removed.         Trophy  
50 Trail 4-8 (AMA Class 4) Automatic. Max: wheelbase 38", wheel size 10", seat height 22", 13mm round intake.         Trophy  
Trailblazer 9-13 70 - 110cc 4 Stroke.         Trophy  
65 Jr 7-9 51-65cc 2 Stroke.         Trophy  
65 Sr  10-11 51-65cc 2 Stroke.       Tier 4    
65 Open 7-11 51-65cc 2 Stroke.         Trophy  
85 Jr 9-11 79 - 85cc 2 Stroke.       Tier 4    
85 Sr 12-15 79 - 85cc 2 Stroke; 75 - 150cc 4 Stroke.       Tier 4    
85 Open 9-15 79 - 85cc 2 Stroke; 75 - 150cc 4 Stroke.         Trophy  
85 C 9-15 79 - 85cc 2 Stroke; 75 - 150cc 4 Stroke.         Trophy  
85 Girls 11-16 79 - 112cc 2 Stroke; 75 - 150cc 4 Stroke. Minibike or big wheels.       Tier 4    
SuperMini 12-16 79 - 112cc 2 Stroke; 75 - 150cc 4 Stroke. Minibike or big wheels.       Tier 4    
Schoolboy 1 12-16 86-125cc 2-Stroke; 75-150cc 4-Stroke. Max. wheel sizes: front 19", rear 16". "A" riders ineligible.       Tier 4    
Schoolboy 2 12-16 122 - 150cc 2-Stroke; 126 - 250cc 4-Stroke. No minibikes or SuperMinis. "A" riders ineligible.       Tier 4    
125 B/C 12+ 122 - 125cc 2-strokes.         Trophy  
*250 A                (SuperSeries only) 12+, 14+ 122 - 250cc.  Minimum age 14 to ride 250cc 2 Stroke. Tier 1          
*250 B               (SuperSeries only) 12+, 14+ 122 - 250cc.  Minimum age 14 to ride 250cc 2 Stroke.     Tier 3      
250 C 12+ 122 - 450cc 2 or 4 stroke         Trophy  
Open A 14+ 122 - 450cc 2 or 4 Stroke. Tier 1          
Open B 14+ 122 - 450cc 2 or 4 Stroke.     Tier 3     Dlr Ck
Open C 14+ 122 - 450cc 2 or 4 Stroke.         Trophy  
Open D 14+ 122 - 450cc 2 or 4 stroke; NO SERIES POINTS.         Trophy  
College 14-24 122 - 250cc 2 or 4 Stroke.       Tier 4    
Women 12+ 122 - 250cc. 
Minimum age 14 to ride 250cc  2-Stroke.
      Tier 4    
25 Plus 25+ 122 - 450cc 2 or 4 Stroke.   Tier 2       Cash or Check
30 Plus 30+ 122 - 450cc 2 or 4 Stroke.   Tier 2       Cash or Check
30 Plus B/C 30+ 122 - 450cc 2 or 4 Stroke.         Trophy  
35 Plus 35+ 122 - 450cc 2 or 4 Stroke.     Tier 3     Cash or Check
40 Plus 40+ 122 - 450cc 2 or 4 Stroke.     Tier 3     Cash or Check
40 Plus B/C 40+ 122 - 450cc 2 or 4 Stroke.         Trophy  
45 Plus 45+ 122 - 450cc 2 or 4 Stroke.     Tier 3     Cash or Check
50 Plus 50+ 122 - 450cc 2 or 4 Stroke.     Tier 3     Cash or Check
55 Plus 55+ 122 - 450cc 2 or 4 Stroke.     Tier 3     Cash or Check
VetSport 25+ 25+ 122 - 450cc 2 or 4 Stroke.         Trophy  
Bomber 14+ 122 - 450cc, 2011 model or older         Trophy  

Other non-points classes
, such as Wobbler (or 50cc Beginner), 50cc Non-Points, 65 Beginner, 85 Beginner, etc. 
are commonly offered at each track.  Please see track web sites or check at registration for details.