Alpinestars S-M3 Radium Helmet
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Factory warranty coverage applies only to units originally sold by authorized U.S. dealers.
Have questions? Call or text 877-376-6380
The SM3 Helmet is designed to set new standards in performance, safety, and comfort for off-road enthusiasts. Packed with cutting-edge technology and engineering innovations, it ensures an unparalleled riding experience. With the SM3 helmet, you can experience the perfect combination of safety, comfort, and performance. Ride confidently wherever the trail takes you.