SCCA® Solo classing — unofficial guide
What autocross class is a Porsche 911 (997 Carrera family)?
ASStreetSSTStreet Touring
A stock 2005–2011 Porsche 911 (997 Carrera family) runs in AS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within SST tire and wheel limits), it runs SST.
Class by preparation level
| Stock (Street) | AS |
| Street Touring | SST |
| Street Prepared | — |
| Street Modified | SSM |
| Prepared | — |
A “—” means the car isn’t listed at that level; a build lands in the least-prepared category its modifications allow.
From the 2026 rulebook (Appendix A)
Street: '911 (997 Carrera, 4, 4S, GTS) (2005-11)' = AS; 997 GT3/Turbo = SS. ST: '911 Carrera (997) (2005-2012)' = SST.
Other AS cars
Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on. Spot an error? Report it on GitHub.