For specific classing, please consult the SCCA Solo rulebook. In addition to the normal classes, the local SFR region offers some local-only classes. You’ll notice a lot of “indexed” classes, which were created to have a more competitive environment. Rather than have lower-attended classes, it creates a large field of people to compete against each other.
Complete List of SFR Region Indexed Classes
SFR Class | Index Classes | Notes |
AS | ||
DS | ||
FSAE | ||
SST | ||
AST | ||
BST | Formerly STU | |
CST | Formerly STR | |
DST | Formerly STX | |
S1 | SS, SSR | |
S2 | BS, FS | |
S3 | CS, ES | |
S4 | GS, HS | |
ST2 | EST, GST | Formerly STS, STH |
SMP | ASP, BSP, BSPV, CSP, DSP, ESP, FSP, OSP, SSP, SM, SMF, SSM | |
M | AM, BM, CM, DM, EM, FM, KM | |
P | BP, CP, DP, EP, FP, XP | |
CAM | CAM-C, CAM-S, CAM-T | |
XS | XA, XB, XU, EVX | |
SC | SSC, CSM, CSX |
CAM – Classic American Muscle Class
The CAM indexed class contains: CAM-C, CAM-S, and CAM-T.
P- Prepared Class
The P class is an indexed class that groups together the following classes: BP, CP, DP, EP, FP, XP.
ST2 – Street Touring 2 Class
The ST2 class groups together the following classes: EST, GST.
SMP – Street Modified / Street Prepared Class
The SMP class groups together the following classes: ASP, BSP, CSP, DSP, ESP, FSP, OSP, SSP, SM, SMF, SSM.
OSP – Open Street Prepared
This is a catch-all style class. There are only two real rules: car must’ve been registered for legal road use at some point, and the tires must be D.O.T. legal. For more specifics, please see the Supplemental Regulations.
M – Modified Class
The M class groups together the following classes: AM, BM, CM, DM, EM, FM, KM.
XS – Xtreme Street Class
The XS class groups together the following classes: XA, XB, XU, EVX.
SC – Spec Combined
The SC class groups together the following classes: SSC, CSM, CSX.
N – Novice Class
If you are new to autocross, it is highly recommended that you sign up in the Novice Class. We will have instructors available to help you out. Please keep in mind that you still need to select an index class during the event pre-registration. If you do not select one, one will be selected for you after pre-registration closes.