WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Porsche Boxster & Cayman S/GTS (981)?

ASStreetSSTStreet Touring

A stock 2013–2016 Porsche Boxster & Cayman S/GTS (981) runs in AS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within SST tire and wheel limits), it runs SST.

From the 2026 rulebook (Appendix A)

Street: 'Boxster (981 S, GTS) (2013-16)' / 'Cayman (981 S, GTS) (2013-16)' = AS. ST: 'Boxster S/GTS, Cayman S/GTS (981) (2013-16)' = SST.

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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.