Gain safety and peace of mind with the CarbonX® Ultimate™ underwear.  It is made from double jersey interlock knit comprised of a patented blend of high-performance fibers and has extraordinary thermal protective properties. It is inherently flame resistant, will not burn, melt, or ignite when subjected to direct flame. Nomex® or CarbonX® Underwear underneath a racing suit will dramatically improve Thermal Protection Performance (TPP) in the case of an accident involving fire.
SFI 3.3 approved, includes SFI tag. Designed to deliver the ultimate in base layer thermal protection. TPP rating of 13 cal/cm2 and zero seconds after flame. Lightweight, patented blend of high-performance fibers. Double jersey interlock knit. Long sleeve crew neck top available. Bottoms available
Simpson Racing CarbonX Ultimate Underwear Top, X-Large Simpson
Simpson Racing CarbonX Ultimate Underwear Top, X-Large
Sku # 630020-TOP-XL
Mfr. Part # 20600X
Condition
New
Brand
Simpson
Sold
Each
Details
Info

Gain safety and peace of mind with the CarbonX® Ultimate™ underwear. It is made from double jersey interlock knit comprised of a patented blend of high-performance fibers and has extraordinary thermal protective properties. It is inherently flame resistant, will not burn, melt, or ignite when subjected to direct flame. Nomex® or CarbonX® Underwear underneath a racing suit will dramatically improve Thermal Protection Performance (TPP) in the case of an accident involving fire.

  • SFI 3.3 approved, includes SFI tag
  • Designed to deliver the ultimate in base layer thermal protection
  • TPP rating of 13 cal/cm2 and zero seconds after flame
  • Lightweight, patented blend of high-performance fibers
  • Double jersey interlock knit
  • Long sleeve crew neck top available
  • Bottoms available
  • Sizes: Small to XX-Large available
  • Made in the USA

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

Specs
Gender
Unisex
Age Group
Adult
Color
Black
Material Type
Carbon Fabric
SFI Rating
3.3
Sold in Quantity
Each
Reviews

Great product

Rated
Product Rating
by McGoey76 on December 25, 2021

Summary: It's a great product, very comfortable well made

I would buy this again.

Rated
Product Rating
by Earl on April 28, 2021

Summary: Fits great.

Yes, I recommend this product.

Related Items / Suggested Parts
Simpson CarbonX® Ultimate™ Fire Resistant Underwear Set
Simpson CarbonX® Ultimate™ Fire Resistant Underwear Set
Tech Support
We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.
About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.