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.
Street Category
Class Name | Abbreviation | Index Classes | Notes |
A Street | AS | ||
A Street Ladies | ASL | ||
D Street | DS | ||
D Street Ladies | DSL | ||
Street 1 | S1 | SS, SSR | |
Street 1 Ladies | S1L | SS, SSR | |
Street 2 | S2 | BS, FS | |
Street 2 Ladies | S2L | BS, FS | |
Street 3 | S3 | CS, ES | |
Street 3 Ladies | S3L | CS, ES | |
Street 4 | S4 | GS, HS | |
Street 4 Ladies | S4L | GS, HS |
Street Touring Category
A Street Touring (AST) is the newest Street Touring class for 2025. If you previously ran an ND Miata in STR (now called CST), you now run in AST.
Class Name | Abbreviation | Index Classes | Notes |
Super Street Touring | SST | ||
Super Street Touring Ladies | SSTL | ||
A Street Touring | AST | ||
A Street Touring Ladies | ASTL | ||
B Street Touring | BST | Formerly STU | |
B Street Touring Ladies | BSTL | Formerly STUL | |
C Street Touring | CST | Formerly STR | |
C Street Touring Ladies | CSTL | Formerly STRL | |
D Street Touring | DST | Formerly STX | |
D Street Touring Ladies | DSTL | Formerly STXL | |
Street Touring 2 | ST2 | EST, GST | Formerly STS, STH |
Street Touring 2 Ladies | ST2L | EST, GST | Formerly STS, STH |
Classic American Muscle (CAM) Category
Class Name | Abbreviation | Index Classes | Notes |
CAM | CAM | CAM-C, CAM-S, CAM-T | |
CAM Ladies | CAML | CAM-C, CAM-S, CAM-T |
Xtreme Street Category
Class Name | Abbreviation | Index Classes | Notes |
Xtreme Street | XS | XA, XB, XU, EVX |
Spec Combined Category
This is a combined class for Solo Spec Coupe (SSC), Club Spec Mustang (CSM), and Club Spec MX-5 (CSX).
Class Name | Abbreviation | Index Classes | Notes |
Spec Combined | SC | SSC, CSM, CSX | |
Spec Combined Ladies | SCL | SSC, CSM, CSX |
Street Modified / Street Prepared (SM/SP) Category
Class Name | Abbreviation | Index Classes | Notes |
Street Modified / Street Prepared | SMP | ASP, BSP, BSPV*, CSP, DSP, ESP, FSP, OSP*, SSP, SM, SMF, SSM | |
Street Modified / Street Prepared Ladies | SMPL | ASP, BSP, BSPV*, CSP, DSP, ESP, FSP, OSP*, SSP, SM, SMF, SSM |
Prepared Category
Class Name | Abbreviation | Index Classes | Notes |
Prepared | P | BP*, CP, DP, EP, FP, XP | |
Prepared Ladies | PL | BP*, CP, DP, EP, FP, XP |
Modified Category
Class Name | Abbreviation | Index Classes | Notes |
Modified | M | AM, BM, CM, DM, EM, FM, KM, FSAE | |
Modified Ladies | ML | AM, BM, CM, DM, EM, FM, KM, FSAE |
Novice
All novices are required to select an index class from any of the above categories. If an index class is not selected during pre-registration, one will be assigned to you when the run groups are finalized.
Please note that Novice Street will not appear under the Class dropdown menu on the registration page. After registration closes and the run groups are finalized, you will be assigned to NS if you are driving a car that would normally be classed in SMP, P, or M categories.
Class Name | Abbreviation | Index Classes | Notes |
Novice | N | ||
Novice Street | NS | Same as N, but for SMP, M, and P vehicles |
*SFR-exclusive class, not nationally recognized. For more information, please visit this page.