Airoh ST.501 Frost ST.5F32S Full-Face Helmet Matte White/Orange, Size S – ECE 22.05

The Airoh ST.501 Frost (code ST.5F32S) is a full-face sport-touring helmet with an HPC composite shell, developed in 2 sizes, and variable-density EPS padding, in matte white with matte black blocks and orange accents. Extra-wide vision clear visor with quick-release and included Pinlock lens, integrated sun visor, Stop Wind, double-D ring closure, and intercom-ready. Weight 1,400 g, ECE 22.05 certification. Available in size S (55-56 cm).

✓ Key features

• HPC composite shell in 2 sizes, with variable-density EPS
• Pinlock lens in the box – no fogged visor in cold and rain
• Integrated sun visor
• Extra-wide vision visor with quick-release, removable without tools
• Channeled ventilation with chin guard and top vents
• Stop Wind included and double-D ring closure
• Removable, washable, and hypoallergenic interior
• Intercom-ready (Bluetooth-ready, intercom not included)

Technical specifications

Size guide

The measurements are those from the Airoh ST.501 size guide, published on the manufacturer's website. Measure your head circumference with a tailor's tape measure just above the eyebrows, at the widest point; when in doubt between two sizes, choose the larger one.

Who it's perfect for

It is the full-face helmet for those who use their motorcycle for touring and daily commuting and want a composite shell instead of thermoplastic: the white with orange stands out in traffic, the visor is wide and comes off in a flash, the sun visor helps with low sun, and the Pinlock already in the box is useful in winter. At a clearance price, with spare parts still available.

Frequently Asked Questions

Is the Pinlock lens included?
Yes: Airoh lists the Pinlock lens, along with the Stop Wind, among what is inside the box of the ST.501, and the extra-wide vision visor is pre-configured to mount it. It is the inner lens that removes fogging in cold and humidity; the Airoh spare part code is 6433.

Does it have a sun visor?
Yes, the ST.501 has an integrated sun visor, which lowers under the clear visor when the sun is low or there is glare and retracts when not needed, without having to change visors. Airoh still sells the dark smoke spare part, code 05SEIN.

Why does it cost so little?
Because the ST.501 is discontinued: it no longer appears in the 2027 Airoh price list and the last helmet with the matte white and orange Frost graphic, in size S, is on clearance at a price well below the list price of €299.99. The helmet is new, boxed, and original Airoh, made in Italy, and departs from Italy with an invoice.

Can I mount an intercom in it?
Yes: Airoh declares the ST.501 Bluetooth-ready, meaning it is prepared to mount an intercom. The device is not included in the package and is purchased separately, and Airoh does not indicate specific models: before purchasing, it is best to check compatibility with full-face helmets with the intercom manufacturer.

Are spare parts still available?
Yes. Airoh keeps ST.501 spare parts in its catalog: clear visor (5846V) and dark smoke (05ST7FS), Pinlock lens (6433), sun visor (05SEIN), summer and winter Stop Wind (55100ST502S / 55100ST502W), headliner (5010ST502N) and cheek pads (5111ST502N) from XS to XXL, breath deflector (15VAC014), and chin guard and top air vents.

Which size should I choose and how much does it weigh?
Measure your head circumference just above the eyebrows, at the widest point, and compare it with the Airoh guide: the size of this listing is S, for 55-56 cm, while the range goes from XS (53-54) to XXL (63 cm). The helmet weighs 1,400 g ±50 g; shipping weight is approximately 1.85 kg.