• Sparco RW-4 Fire Resistant Racing Boxers - FastLap Supply
1 1

Sparco RW-4 Fire Resistant Racing Boxers

Sparco RW-4 Fire Resistant Racing Boxers

$119.00 USD
$119.00 USD
Sale Sold out
Shipping calculated at checkout.
Size
Color

In stock

Sparco RW-4 Fire Resistant Racing Boxers a comfort layer, not a certified safety garment.

Sparco's entry-level RW-4 line of underwear is optimized for both comfort and protection while maintaining a budget price. Although not FIA or SFI approved due to their short length, fire resistant boxer shorts are great for adding protection on hotter days when rated-protection is not needed. Using Sparco's classic soft-touch fire resistant fabric, the regular fitting shorts are comfortable for all body types and offers excellent breathability.

WHAT YOU GET

  • Sparco's entry-level RW-4 line of underwear is optimized for both comfort and protection while maintaining a budget price.
  • Although not FIA or SFI approved due to their short length, fire resistant boxer shorts are great for adding protection on hotter days when rated-protection is not needed.
  • Using Sparco's classic soft-touch fire resistant fabric, the regular fitting shorts are comfortable for all body types and offers excellent breathability.

FAQ

Is this worn alone or layered under a suit?
It's a base layer worn underneath your racing suit, not standalone apparel.

What's it made from?
See the construction details above — the original listing doesn't specify exact fabric percentages.

FASTLAP SUPPLY TAKE: Not cert-rated, but a solid comfort layer for track days and non-competitive use where a full FIA rating isn't required.

FastLap Supply Fit Check:

🇮🇹 Italian Brand — Euro Sizing Runs Small

Sparco lifestyle apparel is designed and sized in Italy. Italian sizing runs smaller than US sizing. US customers: when in doubt, we recommend sizing up one size for your best fit.

View full details
  • 5 stars: 1 (50%)
  • 4 stars: 1 (50%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
H
Hiro T.
Good for the price

Switched to this after my cotton undershirt started feeling sketchy under the suit. breathes surprisingly well for a fire-rated layer, doesn't turn into a sauna under the suit. runs a little small, sized up and it fit better. recommend as part of a full nomex setup.

B
Brad N.
Passed tech no problem

Picked this up as a base layer for a full season of club events. held up through a full season of washes without the fabric breaking down. pricier than a cotton base layer but that's the FIA rating talking. does what a fire-rated layer should, disappears once you're strapped in.