Road racing has clear SFI/FIA equivalencies across the major US series:
- SCCA Club Racing: SFI 3.2A/5 minimum for most classes. FIA 8856-2018 accepted as equivalent.
- NASA Road Racing: SFI 3.2A/5 minimum across HPDE 4 and competition classes.
- Trans Am (TA, TA2): SFI 3.2A/5 minimum; pro classes increasingly require FIA 8856-2018.
- IMSA Michelin Pilot Challenge: FIA 8856-2018 required by class rules.
- Vintage racing (HSR, SVRA, VARA): SFI 3.2A/5 minimum across vintage clubs. Period-correct exemptions exist for the car but not the driver.
For amateur road racers, SFI 3.2A/5 covers the overwhelming majority of US series, and that is what we build. FIA 8856-2018 is mandatory for IMSA professional classes and a number of international championships — we do not hold FIA homologation, so for those you need an FIA-listed manufacturer — don't overspend on FIA if SFI does the job.