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PitStopUSA.com - Racing Suits

Safety Equipment - Racing Suits
Pit Stop USA offers SFI racing suits that meet the full range of SFI standards as well as FIA approved suits. Check with your track or sanctioning body to see what level of suits your class requires.

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Safety Equipment - Racing Suits - Racing Suit Packages
Pit Stop USA is the Online Motorsports Superstore! Racing Suit Packages combine Suits, Shoes and Gloves for a winning combination at a special price you will love! We have packages to fit a racer...More Details »
Safety Equipment - Racing Suits - SFI-1 Rated Single Layer Suits
SFI 3.2A/1 auto racing suits are typically made of Nomex or a Fire-Resistant treated cotton. These fire suits must provide protection for a period of 3 seconds with a minimum TPP Rating of 6. This...More Details »
Safety Equipment - Racing Suits - SFI-5 Rated Multi-Layer Suits
SFI 3.2A/5 auto racing suits are made of Nomex or other fire retardant aramid fibers. These fire suits must provide the same protection for a period of 10 seconds with a minimum TPP Rating of 19....More Details »
Safety Equipment - Racing Suits - Junior Racing Suits
We have kids driving suits in 1 or 2 piece designs. Whether you want to suit your kid up with a Single Layer SFI 1 suit or a Multi-Layer suit with an SFI 5 rating we offer both.
Safety Equipment - Racing Suits - FIA Rated Multi-Layer Suits
If your sanction body requires FIA Homologated 8856-2000 Approved Auto Racing Suits we have them in stock at low everyday prices. The FIA suits we carry also meet the SFI 3.2A/5 standard and feature both certification patches.
Safety Equipment - Racing Suits - Fire Retardant Underwear
Pit Stop USA is the Online Motorsports Superstore! We feature Fire Retardant Underwear at low everyday prices!
Safety Equipment - Racing Suits - Racing Suit Care
Molecule Labs, Inc. provides solutions for the safety, care, and maintenance of numerous technical fabric applications. Specially formulated for Nomex, tested by the SFI Foundation, Inc, and proven...More Details »

More About Racing Suits

There are basically two types of auto racing suits: single-layer and multi-layer. In addition, you have one or two piece auto racing suits. We recommend that drivers wear one-piece suits, and crewmen can choose from from either type depending upon their responsibities.

While racing suits are most commonly identified by their SFI or FIA ratings, the TPP rating is the best measure of a particular racing suits protection level.  TPP ratings are an indication of how long a suit will protect you before you would incur a second degree burn. The TPP rating is divided in half to determine the number of seconds until the human tissue reaches a second-degree burn. For example, if a particular fabric has a TPP rating of 35, it takes 17.5 seconds until a second-degree burn occurs in a flashover situation.

The TPP rating is calculated from a mathematical formula that relates the heat transferred through the garment material to the amount of energy that would be required to cause a second degree burn. TPP results are typically reported as a rating. The TPP rating is the time to incur a second degree burn multiplied by the heat exposure level that the material is exposed. The higher the garment TPP rating, the more time that is required before a second degree burn will occur. The chart below outlines the SFI ratings based on TPP results (shown to the right of the slash mark on the driver suit patch) with the corresponding times to a second degree burn:

SFI Rating

SFI Name

TPP Rating

Time to 2nd Degree Burn


SFI 3.2A/1



3 Seconds

Common Single Layer Suit

SFI 3.2A/5


TPP 20

10 Seconds

Common Multi-Layer Suit

SFI 3.2A/15


TPP 38

19 Seconds

Used for Drag Racing Applications

SFI 3.2A/20


TPP 80

40 Seconds

Used for Top Fuel Drag Racing


TPP rating can vary within an SFI Rating, for example SFI 3.2A/5 rated suits (commonly called SFI-5) are available with TPP ratings anywhere from 19 to 26 depending on the number of layers and the fire-retardant material used to construct the suit. The only way to increase a TPP rating is through adding multiple layers. However, as you increase layers, suits get bulkier, and bulk does not equal comfort. Your goal in selecting a firesuit should be the balance of comfort with maximum protection.

The easiest and best way to to increase TPP is to wear fire retardant underwear under you firesuit.  These garments are typically made of Nomex, CarbonX or other fire-resistant (FR) materials.  It is highly recommended that any driver wear fire-retardant underwear to improve TPP and better protect against injury.

Pit Stop USA is The Online Motorsports Superstore!

We feature Simpson Racing Suits, Bell Racing Suits, G-Force Racing Suits, Alpinestars Racing Suits, Safe-Quip Racing Suits, RaceQuip Racing Suits, Impact Racing Suits, RJS Racing Suits, Crow Racing Suits, Sparco Racing Suits, Awesome Racewear Racing Suits and Ultra Shield Racing Suits. If you are shopping for a new Simpson racing suit, G-Force racing suit, Bell racing suit, Alpinestars racing Suit, Crow racing suit, Impact racing Suit, RaceQuip racing suit, Safe-Quip racing suit, Sparco racing suit, Awesome Racewear racing suit, Crow racing suit, RJS racing suit or Ultra Shield racing suit you have come to the right place. We stock the largest selection of circle track racing suits, stock car racing suits, sprint car racing suits, kart racing Suits, quarter midget racing suits, youth racing suits and drag racing suits you will find anywhere. At Pit Stop USA, we are racing suit experts. We understand your auto racing suit needs. Whether you need any type of circle track driving suit including stock car driving suits, sprint car driving suits, IMCA modified driving suit, Street Stock driving suit, midget driving suit or even Quarter Midget driving suits weve got you covered. We also have a great selection of kart driving suits, road race driving suits and off road driving Suits. We have a huge selection of firesuits that are SFI approved for competition use to fit any racers budget We offer Free UPS Ground Shipping on all Simpson firesuits, Bell firesuits, G-Force firesuits, Crow firesuits, RaceQuip firesuits, Impact firesuits, Safe-Quip firesuits, Sparco firesuits, RJS firesuits, Awesome Racewear, Alpinestars and Ultra Sheild firesuits priced at over $100. We offer SFI Approved fire suits like Simpson fire suits, G-Force fire suits, Impact fire suits, Safe-Quip fire suits, Alpinestars fire suits, Ultra Shield fire suits, Bell fire suits, Sparco fire suits, RJS fire suits, and Crow fire suits at low everyday prices.

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