Alpinestars SM3 Heat Off-Road Helmet — White/Purple/Pink Gloss
Alpinestars SM3 Heat Off-Road Helmet — White/Purple/Pink Gloss
Alpinestars size guides & manuals →
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6 in stock
Special Order — Contact Ducshop
This selection is currently out of stock. Please call 770-424-8804 or email parts@ducshop.com to confirm availability and estimated shipping time before ordering.
The Alpinestars SM3 Heat is built for motocross, enduro and recreational off-road riding. The White/Purple/Pink Heat graphic has a gloss finish, with a ventilated shell and removable cheek pads.
- Thermo-injected polymer shell with varying thickness and a multi-density impact liner.
- DOT certified and ECE 22.06 homologated.
- Rotational-impact protection uses a low-friction liner interface.
- Breakaway peak designed to release at a predetermined force.
- Ten intake vents and seven exhaust ports.
- Emergency-release cheek pads and a soft chin strap with stainless steel D-rings.
- Hydration-tube loops integrated into the cheek pads.
Ducshop helmet size and fit guide ▾
Measure around the widest part of your head, just above your eyebrows and ears. Use this adult SM3 guide as a starting point; a helmet must be tried on to confirm a secure, comfortable fit.
| US helmet size | Head circumference (inches) |
|---|---|
| X-Small | 20.8–21.2 |
| Small | 21.6–22.0 |
| Medium | 22.4–22.8 |
| Large | 23.2–23.6 |
| X-Large | 24.0–24.4 |
| 2X-Large | 24.8–25.2 |
Only stocked selections are offered in the size selector. The helmet should fit snugly without painful pressure and remain secure with the chin strap fastened. Contact Ducshop before ordering if you need help with fit.
Call 770-424-8804 or email parts@ducshop.com.
Special-order riding gear supplied through Ducshop.
Helmets are non-refundable and non-returnable because damage or compromised protective integrity caused while in a customer’s possession may not be visible and could affect the helmet’s ability to protect any future wearer.
Ducshop internal product code: WP.
