Sorry been adevnturin
Here are the list of classes from the latest race, they don't have classifications for electrics btw =P
2020 M1GP & SMUSA – CLASS STRUCTURE / RACING
OPEN EXPERT SM ( Intermediate – Pro level)
OPEN AMATEUR SM (beginner – novice level)
VET+ 30 OPEN SM (30 years and older-Open)
SENIOR +45 OPEN SM (45 years and older-Open)
ADULT MINI SM (Up-to 105cc 2cycle, 160cc liquid cooled 4 cycle or 240cc air cooled 4 cycle)
YOUTH SM (up to 85cc two stroke or 150cc four stroke)
FAST GIRLS GP (Up-to 105cc 2cycle, 160cc liquid cooled 4 cycle or 240cc air cooled 4 cycle)
OPEN GP (Unlimited single cylinder, up to 450cc Twins)
GPA (Up to 250cc single cylinder)
GPB (Up to 160cc single cylinder four stroke)
GPC (Up to 125cc four stroke/65cc two stroke
GP50 (up to 50cc two stroke / 110cc four stroke)