Underwear PRO-TX Top Black X Large SFI 3.3

The Bell Helmets Underwear PRO-TX Top in Black X-Large is a fire-retardant base layer engineered to provide critical thermal protection under racing suits and helmets during high-speed motorsports competition. Built to meet SFI 3.3 certification standards, this long-sleeve crew neck top delivers reliable performance in environments where exposure to open flame or extreme heat is a genuine operational concern, making it essential safety equipment for circuit racing, drag racing, and professional motorsports applications.

The PRO-TX construction uses a fire-retardant blend fabric designed to resist ignition and limit burn-through without compromising breathability during extended competition. SFI 3.3 certification confirms compliance with the racing safety standards mandated by major sanctioning bodies for professional motorsports. The long-sleeve configuration with crew neck design ensures coverage under a racing suit while the X-Large sizing accommodates drivers who need room for layering and unrestricted movement in a cockpit environment. At 0.66 lbs, the garment adds minimal weight while delivering the thermal barrier required during high-performance driving.

This underwear top is engineered for drivers competing in sanctioned motorsports events where fire-retardant base layers are either required or strongly recommended by safety protocols. Whether preparing for road course racing, drag strip competition, or endurance events, the PRO-TX Top serves as the foundational safety layer between driver and racing suit. Motorsport competitors and racing teams understand that proper fire protection begins with compliant base layer equipment from trusted manufacturers like Bell Helmets, whose safety credentials are well-established in the racing community.