SCCA® Solo classing — unofficial guide
What autocross class is a Porsche 944 S/S2 (16v)?
CSStreetCSTStreet Touring
A stock 1987–1991 Porsche 944 S/S2 (16v) runs in CS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within CST tire and wheel limits), it runs CST.
From the 2026 rulebook (Appendix A)
Street: '944 (16v)' = CS (years approximate; listing has none). ST: '944 (non-turbo)' = CST. 8v = ES.
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.