WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Porsche Boxster & Cayman (981 base)?

BSStreetBSTStreet Touring

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

From the 2026 rulebook (Appendix A)

Street: 'Boxster (981 base) (2013-16)' / 'Cayman (981 base) (2013-16)' = BS. ST: 'Boxster/Cayman (987.2 & 981.1) (2009-16)' = BST.

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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.