Motocross helmet Alpinestars S-M3 Jettson

The Alpinestars S-M3 Jettson is an advanced motocross helmet engineered for MX, enduro, and challenging off-road trails. Built with a thermo-injected polymer shell and a five-piece EPS liner with four densities, this off-road motorcycle helmet provides exceptional impact management while keeping weight to a minimum. Alpinestars incorporates a patented low-friction internal layer that works like natural cerebral fluid to dissipate rotational forces during angled impacts. Together with the patented visor release system, designed to detach at a specific threshold to minimize strain on the neck, it offers uncompromised protection. Wear with a proper pair of off-road goggles for optimal comfort and an unobstructed field of view on the track.

Belangrijkste kenmerken

• Shell construction: Advanced thermo-injected polymer blend with varying thickness for optimum impact dissipation and lightweight performance (approx. 1430 g).


• Safety & Homologation: Fully certified to ECE 22.06 and DOT standards, featuring a chin bar engineered beyond standard homologation tests.


• Rotational force management: Patented low-friction inner layer on the 5-piece multi-density EPS liner designed to mitigate angled impact forces.


• Emergency Release System: Removable 3D-molded cheek pads with emergency release pull-tabs for safe extraction by first responders.


• Retention system: Robust stainless steel Double-D rings with a 25 mm soft webbing strap for a secure and customized fit.


• Ventilation: Maximized airflow provided by 10 intake ports and 7 exhaust vents for rapid heat exchange during high-output riding.


• Lining & Convenience: Fully removable and washable comfort liner made from recycled materials, with integrated hydration hose routing in the cheek pads.


• Visor design: Patented release system allows the visor to release with a predetermined force regardless of the angle of impact.


• Sizes & Gender: Available in sizes S through L for men and women (unisex).