Product description
The Alpinestars S-M3 is an accessible motocross helmet for MX, enduro and off-road riding. Alpinestars carried over technology from its higher-end helmets, so this price range still gets you a helmet that is easy to use, comfortable and well protected.
The shell is thermo-injected from a special polymer blend. Varying the thickness by zone keeps the helmet light at around 1430 grams while staying strong where it counts. The shell is extra reinforced around the chin.
Inside is an EPS liner made of five parts with four different densities, so every area gets the right amount of damping. A low-friction coating on the EPS acts as a slip layer and reduces rotational forces in an angled impact.
Ten intakes and seven exhaust ports keep air flowing through the helmet. The patented visor release system lets the visor detach at a predetermined force in a crash, reducing the load on the neck.
For comfort, the liner is made from recycled materials and the fit can be adjusted with crown and cheek pads in different thicknesses. The cheek pads have channels for a hydration tube. The helmet closes with stainless steel D-rings on a soft 25 mm textile chin strap, and the Emergency Release System allows the cheek pads to be removed while the helmet is still on.
Rider Type:
- Motocross
- Enduro
- Off-road
Outer shell:
- Thermo-injected polymer blend with variable thickness
- Reinforced chin area
- Weight: approx. 1430 grams
Inner shell:
- EPS in 5 parts with 4 different densities
- Low-friction coating against rotational forces
Safety:
- Patented visor release system
- Emergency Release System with removable cheek pads
- Stainless steel D-rings with 25 mm textile chin strap
Comfort:
- Comfort liner made from recycled materials
- Crown and cheek pads in different thicknesses
- Channels for a hydration tube
Ventilation:
- 10 intakes
- 7 exhaust ports


















