2025 RULEBOOK
ALL 600 CLASSES FOLLOW THE U6SA RULES
IMPORTANT ANNOUNCEMENT FOR THE 2025 SEASON
FOR ALL 600 CC CLASSES
FOR ALL 600 CC CLASSES
- Your right rear tire must durometer at 45 or higher, post race with a ten (10) minute cool down period.
- There will be a 4 week grace period from the start of the 2025 season only, to use up old tires and acquire tires to meet this requirement.
- After 4 completed events presented by the track, (not 4 events a competitor competes in) from the start of the 2025 season, week 5 tires must meet required durometer measurement.