Q: Do autocross classes still allow shock upgrades on factory springs?

Rules vary by sanctioning body and season, so treat every year’s rulebook as new. The concept this package used, upgraded damping with factory springs and ride height untouched, was written around the rules in force when it was designed, and rulebooks are revised season to season. Read the current rulebook for your class and confirm details with local officials before buying parts around it. Compliance sits with the entrant, not the parts catalog.