Underwear Top SPORT-TX Black Small SFI 3.3

The BELL HELMETS Underwear Top SPORT-TX Black Small SFI 3.3 is a fire-retardant base layer engineered for drivers who demand maximum thermal protection in high-performance and racing environments. Whether you're spending hours on the track, in a competition cockpit, or pushing your vehicle to its limits on closed courses, this long-sleeve crew-neck top serves as the critical first line of defense against heat exposure. Built to meet SFI 3.3 certification standards, it's trusted by serious automotive enthusiasts and professional racers who understand that proper safety gear isn't optional—it's essential.

This fire-retardant blend construction actively resists ignition and thermal degradation, keeping skin protected in extreme conditions where standard cotton or synthetic underwear would fail catastrophically. The long-sleeve design with crew neck provides full arm and torso coverage, eliminating gaps that could expose vulnerable skin. At just 0.6 lbs, the lightweight construction won't add bulk under your racing suit or helmet gear, ensuring comfort during extended driving sessions while maintaining the thermal barrier you need. The SFI 3.3 rating certifies compliance with racing safety standards recognized across sanctioning bodies, meaning this layer works seamlessly with your existing competition wardrobe and meets technical inspection requirements.

Small sizing fits drivers who require a precise, non-restrictive fit beneath racing suits, fire suits, or heavy protective gear without excess material bunching or creating pressure points. Serious track drivers, autocross competitors, and anyone investing in quality safety equipment will recognize this as a non-negotiable component of a complete protection system. When paired with a rated helmet, gloves, suit, and boots, the BELL HELMETS SPORT-TX underwear top completes the layered defense strategy that separates casual drivers from those who take their safety as seriously as their performance. Stock a spare for race weekends and regular track sessions.