Alpinestars SM3 Radium Helmet
【Alpinestars】 Alpinestars SM3 Radium Helmet Discover the Details Uncategorized。
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30-Day Price Guarantee
30-Day Price Guarantee
- Free 30-Day Returns
- Ships from our US warehouse (delivered in 3–7 days)
- Found a lower price? Let us know and we will match it!
1-Year + 180-Day Warranty
1-Year + 180-Day Warranty
So that you can buy with confidence, we provide a comprehensive warranty on every product.
- Warranty Period: This product comes with a 12-month standard warranty.
- Extended Warranty: Buy from our official website and you can register directly for the extended warranty, adding a further 180 days of coverage.
For more details, see the [Warranty Policy].
After your purchase, be sure to complete [Product Registration] to activate your warranty.
Free shipping
Free shipping
- Free Shipping:
All orders ship free of charge and usually arrive within 7 days. - 30-Day Return Guarantee:
If you are not satisfied, you may return or exchange the item within 30 days of delivery. - Shipping Protection (recommended):
For extra peace of mind, we recommend adding Seel Shipping Protection at checkout. With this coverage you can file a claim directly for shipping delays, loss or damage, and receive faster handling and stronger protection.
Please note that if shipping protection is not added, compensation is handled according to the carrier's rules and the applicable conditions. We are always happy to help with logistics inquiries, but the scope of compensation follows the carrier's policy.
For full details, please see the [Shipping Policy] and [Return Policy] pages.
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Features
Features
Specifications
Specifications
| Product Specifications | Value |
|---|---|
| Alpinestars SM3 Radium Helmet | |
| Model Number | 8993645887721 |
| Age Range | 5+ |
| Shipping | Free shipping |
| Delivery Time | 1–5 days |
Reviews (146)
Reviews (146)
Customer Reviews
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details, nor do we have access to your credit card information.
- Varied thickness shell construction for optimized protection and light weight
- Optimized for MX, Enduro, and Offroad use
- Delivers blend of performance, protection, and comfort
- Key Features
- Features thermo-injected shell incorporating a polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight
- Lightweight outer shell is constructed from impact resistant thermoplastic
- Inner shell constructed with a composite fiber assembled between the outer shell and the EPS liner for maximum protection against impacts
- Fit can be tailored to the rider's head thanks to the helmet's crown and cheek pads
- Construction
- Multiple density inner liner ensures the helmet is equipped with the correct density in the correct area for enhanced impact absorption, while also helping to reduce overall weight
- 6-piece EPS liner with three different densities
- Polished inner EPS liner with special coating to reduce friction with comfort liner for rotational impact management
- The inner and outer surfaces are engineered to minimize the effects of oblique impacts
- Low friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result form certain oblique impacts
- Maximized ventilation and high levels of heat transfer exchange thanks to ten inlets and seven exhaust ports
- The visor has been designed to direct air into the ports for enhanced airflow
- Visor release system ensures the visor is released with the correct pre-determined amount of force, effectively reducing the forces on the rider's neck during an impact
- Comfort liner is constructed using recycled materials for a lower carbon footprint
- Hydration tube channels are integrated into the helmet's cheek pads for convenience and performance
- Soft textile chin strap is 25 mm for optimal safety and rider comfort
- Protection
- Equipped with an Emergency Release System and removable cheek pads to permit the safe and easy removal of the cheek pads while the helmet is still on, while the 3D contoured foam ensures rider comfort
- Chin area optimized for superior impact performance
- Stainless steel D-rings ensure a tight and secure fit
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