---
product_id: 303834787
title: "RaceQuip 433991 Black SFI 3.3 Head Sock One Layer"
brand: "racequip"
price: "$4814"
currency: MXN
in_stock: true
reviews_count: 5
category: "Race Quip"
url: https://www.desertcart.mx/products/303834787-racequip-433991-black-sfi-3-3-head-sock-one-layer
store_origin: MX
region: Mexico
---

# Superior Moisture Wicking & Breathability SFI 3.3 Fire Retardant Certified Flat Sewn Seams for Ultimate Comfort RaceQuip 433991 Black SFI 3.3 Head Sock One Layer

**Brand:** racequip
**Price:** $4814
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay cool, protected, and race-ready — because second place isn’t an option!

## Quick Answers

- **What is this?** RaceQuip 433991 Black SFI 3.3 Head Sock One Layer by racequip
- **How much does it cost?** $4814 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/303834787-racequip-433991-black-sfi-3-3-head-sock-one-layer)

## Best For

- racequip enthusiasts

## Why This Product

- Trusted racequip brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Comfort That Lasts:** Soft, hypoallergenic aramid blend with flat seams means zero irritation during long wear.
- • **Lightweight & Durable:** At just 45g, this single-layer head sock delivers premium protection without bulk.
- • **Breathable & Quick-Dry:** Advanced moisture-wicking fabric keeps you cool and dry under pressure.
- • **Race-Ready Fire Protection:** SFI 3.3 certified fire retardant fabric keeps you safe without weighing you down.
- • **Perfect Fit for Helmets & Masks:** Tailored eyehole and neck length ensure seamless compatibility with racing helmets and gear.

## Overview

The RaceQuip 433991 Black SFI 3.3 Head Sock is a lightweight, single-layer balaclava crafted from a soft, hypoallergenic aramid and FRC blend. Designed for professional racers and enthusiasts, it features fire retardant certification, superior moisture-wicking properties, and strategically flat sewn seams for all-day comfort. Its precise fit accommodates helmets and masks effortlessly, making it the ultimate head sock for safety and performance.

## Description

RaceQuip Underwear Head Sock Balaclava SFI 3.3 Fire Retardant FR Single Layer Hood Black Large 433991

Review: (Disclaimer, I removed the RaceQuip logo in the front with a seam ripper. But rest assured, this is the very same item.) First of all, this is a great head sock. I intend to use it for a cosplay which involves wearing a helmet and a gas mask on top of that, which I tested. Easy compatibility with both. It’s thin enough to support other head accessories like racing helmets, which obviously it’s intended for. It’s also VERY easy on your face. Firstly, the material is VERY soft and comfortable. No annoying seam going over the mouth, either. It’s a perfect fit, tight enough to hug your face just ever so slightly, but loose enough to get comfortable mouth movement. The eyehole is also excellently cut. Large enough so that practically nothing obstructs your view, but still enough material to guarantee that it goes over your nose without fear of it falling down. You can also pull the nose part down below your chin if you wanted. It also seems as though the neck covering is the perfect length. Just enough to cover the entire neck and get tucked under a shirt. And finally, the breathability is fantastic. Light and easy. Everything about this head sock feels as though it was meticulously and considerately designed for user comfort and applicability, and everything about it hits the Goldilocks zone for me. Just right. It does exactly everything it’s supposed to do. If I ever lose this one or it somehow gets damaged, I know where I’m coming for round two.
Review: EL PRODUCTO ES DE BUENA CALIDAD, LA TELA Y LA ELABORACION , SOLO QUE SI VIENE UN POQUITO REDUCIDA DE LA TALLA, LES RECOMIENDO CONTEMPLAR ESE PUNTO, PERO EN GENERAL TODO ESTA BIEN.

## Features

- Lightweight Aramid and FRC Blended Fabric
- Superior Moisture Wicking Properties
- Hypoallergenic - Won't Irritate Skin
- Soft and Supple Knit Fabric Dries Quickly
- Seams are Strategically Placed and Flat Sewn for Comfort

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XT8T5HS |
| Assembly Required | No |
| Brand | RaceQuip |
| Colour | Black |
| Country of Origin | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (443) |
| Date First Available | 20 April 2017 |
| Generic Name | RaceQuip Underwear Head Sock Balaclava SFI 3.3 Fire Retardant FR Single Layer Hood Black Large 433991 |
| Inner Material | Cotton |
| Item Dimensions LxWxH | 20.3 x 27.9 x 2.5 Centimeters |
| Item Weight | 45.4 g |
| Item model number | 433991 |
| Manufacturer | Racequip |
| Manufacturer Part Number | 433991 |
| Material | Plastic |
| Model | Racequip Underwear Head Sock Balaclava Sfi 3.3 Fire Retardant Fr Single Layer Hood Black Large 433991 |
| Net Quantity | 1.0 Count |
| OEM Part Number | 433991 |
| Outer Material | Cotton |
| Product Dimensions | 20.32 x 27.94 x 2.54 cm; 45.36 g |
| Size | Large |
| Special Features | Lightweight |
| Volume | 25.25 Millilitres |
| Water Resistance | Not Water Resistant |

## Images

![RaceQuip 433991 Black SFI 3.3 Head Sock One Layer - Image 1](https://m.media-amazon.com/images/I/71ADNpaYT5L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by P***R on 9 September 2021*

(Disclaimer, I removed the RaceQuip logo in the front with a seam ripper. But rest assured, this is the very same item.) First of all, this is a great head sock. I intend to use it for a cosplay which involves wearing a helmet and a gas mask on top of that, which I tested. Easy compatibility with both. It’s thin enough to support other head accessories like racing helmets, which obviously it’s intended for. It’s also VERY easy on your face. Firstly, the material is VERY soft and comfortable. No annoying seam going over the mouth, either. It’s a perfect fit, tight enough to hug your face just ever so slightly, but loose enough to get comfortable mouth movement. The eyehole is also excellently cut. Large enough so that practically nothing obstructs your view, but still enough material to guarantee that it goes over your nose without fear of it falling down. You can also pull the nose part down below your chin if you wanted. It also seems as though the neck covering is the perfect length. Just enough to cover the entire neck and get tucked under a shirt. And finally, the breathability is fantastic. Light and easy. Everything about this head sock feels as though it was meticulously and considerately designed for user comfort and applicability, and everything about it hits the Goldilocks zone for me. Just right. It does exactly everything it’s supposed to do. If I ever lose this one or it somehow gets damaged, I know where I’m coming for round two.

### ⭐⭐⭐⭐⭐ Review
*by R***O on 16 February 2023*

EL PRODUCTO ES DE BUENA CALIDAD, LA TELA Y LA ELABORACION , SOLO QUE SI VIENE UN POQUITO REDUCIDA DE LA TALLA, LES RECOMIENDO CONTEMPLAR ESE PUNTO, PERO EN GENERAL TODO ESTA BIEN.

### ⭐⭐⭐⭐⭐ Review
*by T***Y on 4 July 2022*

Thought it might make my head hotter. Actually wicked away moisture better than I expected. Helped to keep my helmet liner dryer as advertised. As well as the material is fire retardant.

## Frequently Bought Together

- RaceQuip Underwear Head Sock Balaclava SFI 3.3 Fire Retardant FR Single Layer Hood Black
- Permatex 81630 Ultra Red RTV Silicone Gasket Maker, Suitable for Exhaust Manifold, Header, Turbochargers & Slip Fit Exhaust Parts, Temperature Resistant (up to 343°C), Sensor Safe, Non-Corrosive 85g

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**Shop now:** [https://www.desertcart.mx/products/303834787-racequip-433991-black-sfi-3-3-head-sock-one-layer](https://www.desertcart.mx/products/303834787-racequip-433991-black-sfi-3-3-head-sock-one-layer)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-14*