Simpson STD.6 Racing Suit

Simpson STD.6 — SFI 3.2A/5 certified. A classic American racing suit trusted for decades.

The Simpson STD.6 is a longtime staple of US racing, pairing multi-layer SFI 3.2A/5 protection with the rugged build Simpson is known for. It delivers the higher thermal rating most wheel-to-wheel and oval series require, in a no-nonsense, race-proven package. A dependable choice for drivers who want a classic that performs.

WHAT'S IN THE SUIT

• Multi-layer construction certified to SFI 3.2A/5
• Durable Nomex-blend shell built to last season after season
• Pre-curved sleeves and gusseted paneling for in-car movement
• Epaulettes and harness-friendly fit for rescue and belt routing

CERT
SFI 3.2A/5

FIT
Simpson sizing. Measure chest, waist, and height and use Simpson's size chart.

FAQ

SFI or FIA — which do I need?
Most US club and oval series (NASA, SCCA, dirt/asphalt ovals) require SFI-rated suits, while FIA homologation is required for international and many road-racing series. The STD.6 is SFI 3.2A/5; confirm your series' rulebook for the exact requirement.

What does the /5 in SFI 3.2A/5 mean?
The number is the Thermal Protective Performance (TPP) rating — a /5 offers more heat protection and longer escape time than lower-numbered single-layer suits.