SM3 Helmet - Radium - Matte Gray/Black/Yellow Fluo - XS
The Alpinestars SM3 Helmet Radium offers a superior combination of lightweight design and high-level impact protection, making it ideal for motocross, enduro, and offroad enthusiasts. Its varied thickness shell construction features a thermo-injected outer shell crafted from impact-resistant thermoplastic, ensuring durability without adding unnecessary weight. The helmet's inner shell is built with a composite fiber layered between the outer shell and the EPS liner, providing maximum impact absorption while maintaining a comfortable weight. Designed for a customizable fit, the helmet includes adjustable crown and cheek pads, allowing riders to tailor the fit for enhanced comfort and stability during demanding rides.
Constructed with a multiple density inner liner, the SM3 helmet optimally manages impact forces by positioning the correct density material in key areas, thus improving impact performance and reducing overall weight. The six-piece EPS liner incorporates five different densities, effectively controlling impact volume and energy transfer. The polished EPS surface with a special friction-reducing coating minimizes rotational forces during oblique impacts, contributing to rider safety. Engineered to handle the rigors of offroad riding, the helmet's surfaces are designed to reduce the effects of oblique impacts, providing comprehensive protection.
Ventilation is a key feature of the Alpinestars SM3 helmet, with ten intake ports and seven exhaust outlets that maximize airflow and heat transfer. The visor is engineered to direct air into the ventilation ports, enhancing airflow to keep the rider cool. Its release system is calibrated to detach with a set force, reducing strain on the rider's neck during impacts. The comfort liner, made from recycled materials, supports sustainability while ensuring a comfortable fit. Integrated hydration tube channels in the cheek pads provide convenience and hydration management during rides. The soft textile chin strap, measuring 25 mm, offers a secure fit combined with rider comfort.
Safety features include an Emergency Release System with removable cheek pads for easy and safe removal, even when the helmet is worn. The foam padding is contoured in three dimensions to enhance comfort, and the chin area is optimized to improve impact performance. Durable stainless steel D-rings provide a secure fit, ensuring the helmet stays firmly in place during high-intensity activities. Overall, the Alpinestars SM3 Radium Helmet combines advanced materials and thoughtful design to deliver a high-performance, lightweight, and protective gear solution for offroad riders.
Features:
- Varied thickness shell construction with thermo-injected impact-resistant thermoplastic outer shell
- Composite fiber inner shell layered between outer shell and EPS liner for maximum impact absorption
- Customizable fit with adjustable crown and cheek pads
- Multiple density EPS liner with five densities for enhanced impact management
- Friction-reducing coating on inner EPS liner to minimize rotational impact forces
- Engineered to reduce oblique impact effects on outer and inner surfaces
- Maximized ventilation with ten inlet and seven exhaust ports for superior airflow
- Visor designed to direct airflow into ports with a release system to reduce neck strain during impacts
- Comfort liner made from recycled materials for sustainability and comfort
- Integrated hydration tube channels within cheek pads for hydration management
- Soft textile chin strap (25 mm) for secure fit and comfort
- Emergency Release System with removable cheek pads for safe helmet removal
- 3D contoured foam padding for enhanced comfort
- Chin area optimized for superior impact performance
- Durable stainless steel D-rings for secure fastening