Sparco RW-4 Non FIA/SFI Auto Underwear

PART # Choose Options Mfr. Part # N/A


The RW-4 NON-FIA/SFI line of undergarments use the same exact material as the homologated RW-4 undergarments, the only difference is the undergarment configuration. The FIA and SFI do not homologate short sleeved shirts, boxer short lowers and single layer balaclavas. The NON-FIA/SFI RW-4 undergarments are an option to drivers who are not professionally competing but would still like more protection for track days.


  • Soft and comfortable
  • Regular Fit
Shirt Sizes
S – 35″ to 38″ chest (90-97cm)
M – 38″ to  41″ chest (98-105cm)
L –  42″ to 44″ chest (106-113cm)
XL – 45″ to 48″ chest (114-121cm)
XXL – 48″ to 51″ chest (122-129cm)
Pant Sizes
S – 31″ to 33″ waist (78-85cm)
M – 34″ to  36″ waist (86-93cm)
L –  37″ to 40″ waist (94-101cm)
XL – 40″ to 43″ waist (102-109cm)
XXL – 43″ to 46″ waist (110-117cm)

Share your thoughts!

Let us know what you think...

What others are saying

There are no contributions yet.




A link to set a new password will be sent to your email address.

Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.

Continue as a Guest

Don't have an account? Sign Up