Underwear Top FR Black Small SFI 3.3

The Underwear Top FR Black Small SFI 3.3 from RaceQuip is a professional-grade fire-retardant base layer engineered for drivers who demand serious thermal and flame protection in high-heat environments. Whether you're campaigning on the track, running road rally events, or working in an engine bay with extreme temperature exposure, this long-sleeve undershirt serves as your first line of defense against accidental ignition and heat stress. SFI 3.3 certification means it meets the Sport Car Club of America's rigorous fire-resistance standards—the same specification required for sanctioned motorsports competition.

Built from a fire-retardant blend fabric, this base layer is designed to resist ignition and self-extinguish if exposed to open flame, a critical safety feature for drivers and pit crew in motorsports environments. The high collar construction and full long sleeves maximize coverage, eliminating vulnerable skin exposure and working seamlessly under race suits, driver suits, and heavy protective gear. At just 0.52 lbs, the Small size provides a lightweight, breathable fit that won't add bulk or restrict movement during intense driving sessions, while the black colorway maintains a professional appearance both in the cockpit and in the garage.

This undershirt is essential for competitive drivers, track day enthusiasts, and motorsports professionals who regularly wear certified racing suits or work in high-temperature automotive environments. The SFI 3.3 rating ensures compliance with major racing sanctioning bodies, making it mandatory or strongly recommended for drag racing, road course competition, and professional motorsports work. Pair it under your racing suit or wear standalone during shop work involving welding, engine building, or high-heat mechanical operations for reliable flame protection and comfort.