Classes for STTARS sanctioned events in 2008
General Info and tire rules

Unlimited
Unlimited modification
Open displacement Single or Twin

450
Unlimited modification
Up to 450cc liquid-cooled, four-stroke Single or Twin
Open displacement air-cooled Single
Up to 500cc liquid-cooled, two-stroke Single

250
Unlimited modification
Up to 250cc liquid-cooled Single
Up to 400cc air-cooled Single

Vet 30+
Unlimited modification
Open displacement Single or Twin

Vet 40+
Unlimited modification
Open displacement Single or Twin

Intermediate
(Open Pro riders are not eligible)
Unlimited modification
Open displacement Single or Twin
The class champion graduates out of the Intermediate class (not eligible) the following year.

Novice 
Unlimited modification
Open displacement Single or Twin
The class champion graduates out of the Novice class (not eligible) the following year. 

Beginner
(not a series points paying class)
Unlimited modification
Open displacement Single or Twin
The 10-point system will be used to graduate riders out of the Beginner class.

Mini-moto 160cc 
(minimum age 10)
Unlimited modification
Up to 160cc four-stroke Single
Up to 110cc two-stroke Single

Mini-moto 125cc
(minimum age 10)
Unlimited modification
Up to 125cc four-stroke Single
Up to 65cc two-stroke Single

Mini-moto Jr.
(age 5-10)
All riders trophy
Unlimited modification
Up to 111cc four-stroke Single
Up to 65cc two-stroke Single

ATV Expert
Unlimited modification
Open displacement Single or Twin

ATV Novice
Unlimited modification
Open displacement Single or Twin

The following minimum number of entries will be used to determine how many trophies are awarded in a class. 
3 riders- 1st place trophy.
6 riders- 1st and 2nd place trophies.
9 riders- 1st, 2nd and 3rd place trophies.

A minimum of three riders must start in the main for championship series points to be awarded.
Championship trophy plates will be awarded in classes that paid out points in a minimum of six rounds.