Icon Threshold Nocturnal 2 Modular Helmet
Icon Threshold Nocturnal 2 Modular Helmet
View Size Guide
How to Measure Your Head
Wrap a flexible tape measure around your head approximately 1 inch (2.5 cm) above your eyebrows and ears. Use the measurement to determine your recommended helmet size below.
Icon Airflite™ / Ultraflite™ Helmet Size Chart
| Helmet Size | Head Circumference (cm) |
|---|---|
| XS | 53–54 cm |
| S | 55–56 cm |
| M | 57–58 cm |
| L | 59–60 cm |
| XL | 61–62 cm |
| 2XL | 63–64 cm |
| 3XL | 65–66 cm |
Proper Helmet Fit
Helmet fit is critical to protective performance. Your helmet should fit comfortably and securely around the crown of your head, without creating pressure points.
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The cheek pads should fit firmly against your face.
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Fasten the chin strap securely.
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Grab the chin bar and move the helmet from side to side. Your cheeks should move with the helmet, and the helmet should not slide across your face.
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Different cheek-pad thicknesses may be available to help achieve the best fit.
Important: The correct helmet size can only be confirmed by physically fitting the helmet to the wearer. Whenever possible, try the helmet on before purchasing to ensure the proper fit.

⚠️ WARNING: Improper helmet fit could contribute to serious injury or death.
Sizing Disclaimer: Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.
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Intermediate-oval headform. Handmade composite fiberglass shell.
Icon Threshold Nocturnal 2 Modular Helmet Features:
- Intermediate-oval headform
- Handmade composite fiberglass shell
- Modular chinbar with easy open button
- Multiple oversized intake and exhaust ports
- Fog-free ThresholdShield installed
- Internal dark smoke Threshold Dropshield
- Premium comfort liner with moisture-wicking Hydradry
- Emergency release cheek pads
Specifications:
- Available sizes: X-Small, Small, Medium, Large, X-Large, 2X-Large, 3X-Large
- Type: Modular
- Shell Material: Composite Fiberglass
- Finish: Matte
- Features: Removable Liner, Moisture Wicking, Vented
- Sold individually
Note: Compatible with ICON Helmlink Bluetooth communication (sold separately).
| Product Title | Store SKU | MFR Part # |
|---|---|---|
| X-Small | DS01003445 | 0100-3445 |
| Small | DS01003446 | 0100-3446 |
| Medium | DS01003447 | 0100-3447 |
| Large | DS01003448 | 0100-3448 |
| X-Large | DS01003449 | 0100-3449 |
| 2X-Large | DS01003450 | 0100-3450 |
| 3X-Large | DS01003451 | 0100-3451 |
Bulk order
| Variant | Quantity | Price | Total |
|---|---|---|---|
|
X-Small
DS01003445
/
0100-3445
|
|
||
|
Small
DS01003446
/
0100-3446
|
|
||
|
Medium
DS01003447
/
0100-3447
|
|
||
|
Large
DS01003448
/
0100-3448
|
|
||
|
X-Large
DS01003449
/
0100-3449
|
|
||
|
2X-Large
DS01003450
/
0100-3450
|
|
Product subtotal
