Underwear Bottom FR Black Small SFI 3.3

The Underwear Bottom FR Black Small SFI 3.3 by RACEQUIP is a specialized fire-resistant base layer designed for motorsports competitors who require maximum thermal protection during high-performance driving. This garment is essential for those participating in road course events, autocross, or drag racing, serving as a critical foundation for a complete SFI-compliant safety suit system.

Constructed with advanced flame-resistant fabric technology, this underwear bottom meets SFI 3.3 specifications, which is the industry standard for protective apparel in motorsports. Its close-fitted design minimizes bunching under your race suit while ensuring breathability during extended driving sessions. The black color helps resist visible staining from sweat and track grime.

Drivers competing in sanctioned events under NHRA, SCCA, or local track rules will find this garment beneficial when paired with RACEQUIP's matching FR top and a certified race suit to achieve full SFI compliance. The lightweight design adds negligible weight, making it easy to transport alongside your helmet and gear.