SFI 3.2A/1 racing suits
Single-layer Proban® FR cotton suits developed around SFI 3.2A/1, the entry grade used in club racing, drag racing and track days where the series allows it.
What /1 means
The /1 grade of SFI 3.2A requires a minimum TPP of 6 cal/cm². Cuircon's /1 construction is a single layer of 295 g/m² Proban® FR cotton, recorded at TPP 10 in our materials library.
Some series accept /1 suits only when worn over fire-resistant underwear, and many set /5 as the minimum. Check the series rules before choosing /1.
Why brands offer a /1 suit
A single-layer suit is lighter, cooler and costs less to make than a multi-layer suit, which makes it the usual entry point in a racewear range. It sits naturally alongside a /5 suit and fire-resistant underwear in a collection.
Material: Proban® FR Cotton
| Composition | FR-treated cotton (Proban®) |
|---|---|
| Weight | 295 g/m² |
| Construction | Single layer |
| Fire resistance | Treated — cotton finished with the Proban® flame-retardant process |
| Recorded test data | TPP 10 |
From Cuircon's materials library. A material figure is not a garment certification. Ask for the test report behind any figure.
SFI 3.2A at a glance
| Issued by | SFI Foundation, Inc. |
|---|---|
| Current edition | Effective 26 June 2020 |
| Covers | Driver suits: one-piece suits, or jacket and pants |
| Graded by | TPP of the suit material: grades /1, /3, /5, /10, /15, /20, /25, /30 |
| Who certifies | The manufacturer, under a licence agreement with SFI. SFI does not certify or approve products. |
From the official specification. Read the full SFI 3.2A guide.
Products in this range
In development for certification
Designed around an SFI specification. Certification status, certifying manufacturer and labelling for your order are confirmed in the quotation.
Auto Racing 2 Piece Suit
Custom SFI 3.2A/1 Racing Suit – Single Layer FR Cotton
Custom SFI 3.2A/1 Racing Jacket – Single Layer FR Cotton
Custom SFI 3.2A/1 Racing Pants – Single Layer FR Cotton
Common questions
Does Proban® cotton make a suit SFI compliant?
No. Proban® is a flame-retardant treatment on cotton. A suit can only carry an SFI patch when the finished garment has been tested and certified by a licensed manufacturer. Each product page shows the verified status.
Related: Proban® suits · FR underwear · SFI 3.2A/5 suits · SFI guide · Construction library · Who we serve