The Alpinestars SM3 Heat Helmet is designed for motocross, enduro, and off-road riding. This 2XL helmet features a lightweight thermoplastic outer shell with varied thickness construction, providing a balanced combination of impact protection, comfort, and reduced weight. The gloss yellow fluo and black finish delivers a distinctive appearance while maintaining the performance-focused design expected from Alpinestars protective equipment.
The SM3 uses a composite fiber layer positioned between the outer shell and EPS liner to help manage impact energy. Its six-piece, multi-density EPS liner uses five densities in strategically selected areas for effective impact absorption and weight control. A low-friction coating on the main EPS liner helps reduce rotational acceleration associated with certain oblique impacts. The visor release system is engineered to release at a predetermined force, helping reduce forces transferred to the rider’s neck during an impact.
Ventilation is provided through ten intake ports and seven exhaust ports, while the visor directs airflow into the helmet for improved heat exchange. The comfort liner uses recycled materials and includes removable cheek pads with 3D-contoured foam for a secure, comfortable fit. Integrated hydration tube channels add convenience during extended rides. The 25 mm soft textile chin strap and stainless steel D-rings provide dependable retention and adjustment.
The helmet includes an Emergency Release System that allows the cheek pads to be removed while the helmet remains in place, supporting safer helmet removal after an incident. The Alpinestars SM3 Heat is sized 2XL and is identified by manufacturer part number 8301026-5011-XXL and vendor part number 8301026-5011-XXL.
Features:
- Size: 2XL
- Model: SM3 Heat
- Color: Gloss Yellow Fluo/Black
- Brand: Alpinestars
- Manufacturer part number: 8301026-5011-XXL
- Vendor part number: 8301026-5011-XXL
- Application: Designed for motocross, enduro, and off-road riding
- Shell construction: Thermo-injected polymer shell with varied thickness for impact protection and reduced weight
- Impact protection: Composite fiber layer positioned between the outer shell and EPS liner
- EPS liner: Six-piece, five-density construction for targeted impact absorption
- Rotational impact management: Low-friction coating helps reduce rotational acceleration during certain oblique impacts
- Ventilation: Ten intake ports and seven exhaust ports support airflow and heat exchange
- Visor: Airflow-directing design with a predetermined-force release system
- Fit: Adjustable crown and cheek pads provide a tailored fit
- Comfort liner: Recycled-material construction with removable, 3D-contoured cheek pads
- Convenience: Integrated hydration tube channels in the cheek pads
- Retention: 25 mm soft textile chin strap with stainless steel D-rings
- Safety system: Emergency Release System supports cheek-pad removal while the helmet is worn