The Alpinestars SM3 is a lightweight, well-vented off-road helmet that brings Alpinestars protection tech to a value price.
Key details: off-road / motocross helmet, thermoplastic outer shell with composite-fiber inner shell, 6-piece multi-density EPS with low-friction rotational coating.
Why riders pick it:
Variable-thickness shell balances impact protection and low weight.
Low-friction coating on the EPS liner helps reduce rotational forces from oblique impacts.
10 intakes and 7 exhausts, with a visor shaped to push air into the vents.
Visor release system detaches at a set force to reduce load on the neck.
Emergency-release cheek pads, hydration tube channels and stainless steel D-rings.
Comfort liner made from recycled materials.
Not sure on size? Measure the circumference of your head just above the ears and check Alpinestars' size chart — message us if you're between sizes and we'll help.
