Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Fire Resistant Underwear

Fire Resistant Underwear

Safety is something we take very seriously. We know seconds make a HUGE difference which is why we carry a huge line of fire resistant underwear to help keep you safe. Our selection features some of the lightest, safest and most comfortable underwear in the industry from top brands you trust, like Alpinestars, Oakley, Bell, Simpson & Sparco. Don't take any chances, get the best in fire retardent underwear from Speedway Motors.

Featured Products
  • Tru-X-Factor Carbon Underwear
    From: $49.99
    Product Rating: 3.25 Stars
    Tru-X-Factor Carbon Underwear
    (Part #910726)
    x
                

    Our exclusive racing underwear is a 50% carbon fiber Nomex, woven together to offer you the ultimate in protection. These have TPP ratings of 14.5 which helps ensure your safety. Sizes S-XXL.

    Nomex top and nomex pants are rated SFI 3.3.

    This underwear runs small.  It is recommended you order one size larger than the chart indicates.

    Nomex Underwear Sizing Guide (GIF)

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Speedway Nomex Hood
    $19.99
    Product Rating: 4.50 Stars
    Speedway Nomex Hood
    (Part #91071287)
    x
                
    • Single layer Nomex hood adds extra protection under helmet
    • Natural color
    • Single eyeport
  • Bell Inner X Carbon Underwear Top
    $79.99
    $84.99
    Bell Inner X Carbon Underwear Top
    (Part #2104822)
    x
                

    Bell has developed a new line of performance inner wear called Inner X Carbon. The exclusive fire retardant Inner X Carbon fabric provides an extra layer of  protection. The extra soft Inner X Carbon material is comfortable against the skin and has excellent moisture evaporation properties.

    • Cutting edge thermal protection
    • Soft feel
    • Good durability
    • SFI 3.3 certified

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Sparco Shield RW-9 Long Sleeve Fire-Resistant Undershirt
    New
    Sparco Shield RW-9 Long Sleeve Fire-Resistant Undershirt
    (Part #67401764)
    x
                

    This Sparco Shield RW-9 Long Sleeve undershirt was designed with special material ( Aramidic Jersey, Acrilate, Modal Viscose, Elastane) to give you an incredible comfort while driving. This undershirt is sold individually.

  • Minimal flat-seams
  • Fire resistant
  • Equipped with X-Cool to stay fresh
  • Breathable & Lightweight
  • Choose from colors: Black, White
  • Choose from sizes: XS/S, M/L, and XL/XXL

  • Simpson Nomex III Underwear
    $99.99
    Simpson Nomex III Underwear
    (Part #63020)
    x
                

    Undershirt has sports turtle neck styling with long sleeves. Underwear provides an additional layer of comfort and safety. Both nomex top and nomex pants are recommended for use with all driving suits.

    Nomex Underwear Sizing Guide

  • Bell Inner X Carbon Socks
    $29.99
    $34.99
    Product Rating: 2.00 Stars
    Bell Inner X Carbon Socks
    (Part #2104838)
    x
                

    Bell has developed a new line of performance inner wear called Inner X Carbon. The exclusive fire retardant Inner X Carbon fabric provides an extra layer of  protection. The extra soft Inner X Carbon material is comfortable against the skin and has excellent moisture evaporation properties.

    • Cutting edge thermal protection
    • Soft feel
    • Good durability

    Note:  These socks run small in size. Be sure to order a size or two larger than your normal shoe size.

  • Bell Inner X Carbon Underwear Bottom
    $79.99
    $84.99
    Bell Inner X Carbon Underwear Bottom
    (Part #2104828)
    x
                

    Bell has developed a new line of performance inner wear called Inner X Carbon. The exclusive fire retardant Inner X Carbon fabric provides an extra layer of  protection. The extra soft Inner X Carbon material is comfortable against the skin and has excellent moisture evaporation properties.

    • Cutting edge thermal protection
    • Soft feel
    • Good durability
    • SFI 3.3 certified

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Sparco Shield RW-9 Fire-Resistant Underpants
    New
    Sparco Shield RW-9 Fire-Resistant Underpants
    (Part #67401765)
    x
                

    These Shield RW-9 underpants from Sparco are designed to fit your bodies shape in order to give you the ultimate comfort while driving. These underpants are constructed of Aramidic Jersey, Acrilate, Modal Viscose, and Elastane.

    • New filament has been designed and constructed to remove as quick as possible sweat, for an added breathability and freshness
    • Shield RW- 9 is seamless with some special parts to obtain an added breathability
    • Sparco underwear weight is only 180 gr/mq, most lightweight fireproof underwear in the world
    • Shield RW-9 contains X-Cool to guarantee wellness and freshness at the same time
    • Available in white or black 
    • Choose from sizes: XS/S, M/L, and XL/XXL

     

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  • Sparco 001761PRS1S Soft Touch Nomex Underwear, Size Small
    Garage Sale
    Sparco 001761PRS1S Soft Touch Nomex Underwear, Size Small
    (Part #67499218)
    x
                

    This is garage sale priced because it has been discontinued.

     

    **No Warranty, No Returns On Garage Sale Items**  

     

    Sparco’s NOMEX Soft Touch is the lightest and most comfortable found in the racing industry. When seconds count wearing NOMEX underwear gives you added protection that can make that critical difference. Our NOMEX underwear can also keep you feeling cooler on hot days by wicking perspiration from the body.

     

  • Sparco Shield RW-9 Long Sleeve Fire-Resistant Undershirt
    New
    Sparco Shield RW-9 Long Sleeve Fire-Resistant Undershirt
    (Part #67401764)
    x
                

    This Sparco Shield RW-9 Long Sleeve undershirt was designed with special material ( Aramidic Jersey, Acrilate, Modal Viscose, Elastane) to give you an incredible comfort while driving. This undershirt is sold individually.

  • Minimal flat-seams
  • Fire resistant
  • Equipped with X-Cool to stay fresh
  • Breathable & Lightweight
  • Choose from colors: Black, White
  • Choose from sizes: XS/S, M/L, and XL/XXL

  • Bell Inner X Carbon Underwear Bottom
    $79.99
    $84.99
    Bell Inner X Carbon Underwear Bottom
    (Part #2104828)
    x
                

    Bell has developed a new line of performance inner wear called Inner X Carbon. The exclusive fire retardant Inner X Carbon fabric provides an extra layer of  protection. The extra soft Inner X Carbon material is comfortable against the skin and has excellent moisture evaporation properties.

    • Cutting edge thermal protection
    • Soft feel
    • Good durability
    • SFI 3.3 certified

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Garage Sale - Tru-X-Factor Carbon Underwear, Small
    Garage Sale
    Garage Sale - Tru-X-Factor Carbon Underwear, Small
    (Part #UP32275)
    x
                

    Our exclusive racing underwear is a 50% carbon fiber Nomex, woven together to offer you the ultimate in protection. These have TPP ratings of 14.5 which helps ensure your safety.

    Nomex top and nomex pants are rated SFI 3.3.

    This underwear runs small.  It is recommended you order one size larger than the chart indicates.

    Nomex Underwear Sizing Guide (GIF)

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

     

    This is garage sale priced because it is dirty.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

  • Garage Sale - Bell "Inner X" Short Sleeve Top
    Garage Sale
    Garage Sale - Bell "Inner X" Short Sleeve Top
    (Part #2113822)
    x
                

    Bell has developed a new line of performance inner wear called Inner X. Our exclusive fire retardant Inner X fabric provides an extra layer of protection. The extra soft Inner X material is comfortable against the skin and has excellent moisture evaporation properties.

    • Fire Resistant Interlock Design
    • Moisture Wicking Fabric
    • Stretchable True Body Fit Construction
    • Contrast Stitching
    • Heat Seal Labels for Added Comfort
    • Black & White Contrast Design
    • SFI 3.3 Rated

    Clearance!

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • Sparco 00174PBI1S Boxer Shorts, Small
    $29.99
    $95.99
    Garage Sale
    Sparco 00174PBI1S Boxer Shorts, Small
    (Part #67499196)
    x
                

    This is garage sale priced because it has been discontinued.

     

    **No Warranty, No Returns On Garage Sale Items** 

     

    Sparco Nomex boxer shorts are made from a unique interlock Nomex III weave for a much smoother feel than traditional Nomex underwear, while remaining very light and comfortable. 

  • Bell Inner X Carbon Underwear Top
    $79.99
    $84.99
    Bell Inner X Carbon Underwear Top
    (Part #2104822)
    x
                

    Bell has developed a new line of performance inner wear called Inner X Carbon. The exclusive fire retardant Inner X Carbon fabric provides an extra layer of  protection. The extra soft Inner X Carbon material is comfortable against the skin and has excellent moisture evaporation properties.

    • Cutting edge thermal protection
    • Soft feel
    • Good durability
    • SFI 3.3 certified

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Garage Sale - Flame Retardant Underwear, Bottoms, Size XXXL
    Garage Sale
    Garage Sale - Flame Retardant Underwear, Bottoms, Size XXXL
    (Part #910713.GS1)
    x
                Please view the product's page for more information
            
  • RCI Nomex Underwear
    From: $34.99
    Garage Sale
    RCI Nomex Underwear
    (Part #910713)
    x
                

    This is garage sale priced because it has been discontinued.

     

    **No Warranty, No Returns On Garage Sale Items**

     

    Add an additional layer of comfort and safety to your racing suit with Nomex® Underwear. Nomex® is a temperature-resistant fiber that will not melt when subjected to flames, which is why Nomex® Underwear highly recommended for use with all driving suits. When it’s exposed to intense heat, Nomex® carbonizes and becomes thicker to provide a protective barrier between the heat source and skin, which gives the racer more time to escape in the event of a dangerous fire.

    Nomex® pants feature a waffle-weave pattern and heel straps to keep pants from sliding up over ankle.

    Nomex Sizing Guide (GIF)

  • Sparco Shield RW-9 Fire-Resistant Underpants
    New
    Sparco Shield RW-9 Fire-Resistant Underpants
    (Part #67401765)
    x
                

    These Shield RW-9 underpants from Sparco are designed to fit your bodies shape in order to give you the ultimate comfort while driving. These underpants are constructed of Aramidic Jersey, Acrilate, Modal Viscose, and Elastane.

    • New filament has been designed and constructed to remove as quick as possible sweat, for an added breathability and freshness
    • Shield RW- 9 is seamless with some special parts to obtain an added breathability
    • Sparco underwear weight is only 180 gr/mq, most lightweight fireproof underwear in the world
    • Shield RW-9 contains X-Cool to guarantee wellness and freshness at the same time
    • Available in white or black 
    • Choose from sizes: XS/S, M/L, and XL/XXL

     

  • Oakley Base Layer Bottoms
    $129.99
    Oakley Base Layer Bottoms
    (Part #69442192)
    x
                

    When fire puts you on the barbecue menu, you’ll understand why so much research went into CarbonX®. It’s a synthetic that helps shield you against heat and flame, and some of the fastest racers on the planet rely on its protection. We shaped it with 3-D anatomical engineering to create this comfortable base layer, a design approved by both the FIA and SFI.

    • 100% CarbonX®
    • Anatomical engineering for optimal comfort and fit
    • Contrast topstitching
    • Logo and label accents
    • Made in the U.S.A.
    • Approved by both the FIA and SFI
    • Available in black or grey
    • Sizes S-XXL

    Oakley Sizing Chart (Link)

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Tru-X-Factor Carbon Underwear
    From: $49.99
    Product Rating: 3.25 Stars
    Tru-X-Factor Carbon Underwear
    (Part #910726)
    x
                

    Our exclusive racing underwear is a 50% carbon fiber Nomex, woven together to offer you the ultimate in protection. These have TPP ratings of 14.5 which helps ensure your safety. Sizes S-XXL.

    Nomex top and nomex pants are rated SFI 3.3.

    This underwear runs small.  It is recommended you order one size larger than the chart indicates.

    Nomex Underwear Sizing Guide (GIF)

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Sparco ICE Nomex Underwear, Bottom
    From: $124.99
    Product Rating: 5.00 Stars
    Garage Sale
    Sparco ICE Nomex Underwear, Bottom
    (Part #67417613)
    x
                

    This is garage sale priced because it has been discontinued.

    No Warranty, No Returns on Garage Sale Items    

     

    The ICE line of Nomex underwear features X-Cool chemical treatment - the same found on SPARCO's legendary X-Light line of driving suits.  This X-Cool treatment, combined with ultra lightweight nomex fabric, makes the ICE line of Nomex underwear the coolest and most breathable on the market!  Sizes S-XL.

    Sparco Sizing Chart (Link) 

     


     

  • Sparco ICE Nomex Underwear, Top
    From: $113.99
    Garage Sale
    Sparco ICE Nomex Underwear, Top
    (Part #67417612)
    x
                

    The ICE line of Nomex underwear features X-Cool chemical treatment - the same found on SPARCO's legendary X-Light line of driving suits.  This X-Cool treatment, combined with ultra lightweight nomex fabric, makes the ICE line of Nomex underwear the coolest and most breathable on the market!  Sizes S-XL.

    Sparco Sizing Chart (Link) 

  • Garage Sale - Flame Retartdant Underwear, Bottoms, Size Small
    Garage Sale
    Garage Sale - Flame Retartdant Underwear, Bottoms, Size Small
    (Part #910713.GS)
    x
                

    Add an additional layer of comfort and safety to your racing suit with flame retardant underwear.  When it’s exposed to intense heat, flame retardant material carbonizes and becomes thicker to provide a protective barrier between the heat source and skin, which gives the racer more time to escape in the event of a dangerous fire.

    Flame retardant pants feature a waffle-weave pattern.

    Sizing Guide (GIF)

     

    These pants are garage sale priced because they are different than what we currently offer.

     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

  • Speedway Nomex Hood
    $19.99
    Product Rating: 4.50 Stars
    Speedway Nomex Hood
    (Part #91071287)
    x
                
    • Single layer Nomex hood adds extra protection under helmet
    • Natural color
    • Single eyeport
  • Oakley Short Sleeve Base Layer Top
    Oakley Short Sleeve Base Layer Top
    (Part #69413525)
    x
                

    This is for those who strap themselves into machines that move with a million tiny explosions, and sometimes one big one that tends to get out of hand. Engineered with CarbonX®, the next generation of innovative fire resistance. Anatomical engineering shapes it for body contours, freeing movement and keeping you comfortable.

    • 100% CarbonX® offers superior protection against heat and flame
    • Anatomical engineering for optimal comfort and fit
    • Contrast topstitching
    • Logo, icon and label accents
    • Available in black or grey
    • Sizes S-XXL

    Sizing Chart

  • Alpinestars Fire Resistant Underwear Top, Race Series F1, SFI 3.3 Certified
    Alpinestars Fire Resistant Underwear Top, Race Series F1, SFI 3.3 Certified
    (Part #1244513)
    x
                

    Lightweight and offering high breathability and flame-resistance properties, the Race Series F1 specification underwear incorporates a relaxed fit for comfort when wearing a driving suit.

    Certified to FIA 8856-2000 and SFI 3.3 homologation standards

    • F1 specification underwear, constructed using an innovative flame resistant technology developed by Alpinestars. Lenzing FR® is a special natural viscose fiber with unique thermal insulation and permanent flame resistance properties that help prevent heat stress and heat stroke.
    • Lightweight, special material structure offers high breathability performance.
    • Relaxed fit offers increased comfort.
    • Extended collar for greater performance.
    • Special material formulation is more breathable and has better elastic properties than conventional fabrics.
    • Choose Black or White in sizes S-XXL

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

  • Garage Sale - Alpinestars Fire Resistant Underwear Top, Race Series F1, SFI 3.3, Large
    Garage Sale
    Garage Sale - Alpinestars Fire Resistant Underwear Top, Race Series F1, SFI 3.3, Large
    (Part #UP52664)
    x
                Please view the product's page for more information
            
  • Oakley Long Sleeve Base Layer Top
    Oakley Long Sleeve Base Layer Top
    (Part #69443524)
    x
                

    This is for those who strap themselves into machines that move with a million tiny explosions, and sometimes one big one that tends to get out of hand. FIA and SFI approved, it’s engineered with CarbonX®, the next generation of innovative fire resistance. Anatomical engineering shapes it for body contours, freeing movement and keeping you comfortable

    • 100% CarbonX®
    • 5.5 oz textile weight
    • Anatomical engineering for optimal comfort and fit
    • Contrast topstitching
    • Logo, icon and label accents
    • FIA and SFI approved
    • Available in black or grey
    • Sizes S-XXL

    Oakley Sizing Chart (Link)

    Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings?

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