Mini

Age: 12-15
Displacement: 0 cc to 85 cc

Lightweight II

12+ Class
Displacement: 0 cc to 200 cc

Lightweight

12+ Class:
Displacement: 201 cc to 250 cc

​Vet, Senior, Mag, and Master Classes:
Displacement: 0 cc to 250 cc 

Heavyweight

Displacement: 251+ cc