Helmet Alpinestars SM5 Action 2 Red Blue White

Elevate your riding experience with the Alpinestars SM5 Action 2 helmet.

Specifications:

• Collarbone protection and visor release: a raised area designed with padding effectively reduces the forces transmitted to the collarbone, while a patented visor release system ensures the visor detaches with the correct amount of preset force, regardless of impact angle.
• Optimized shell volume: the lower shell volume in sizes M, L, XL, and 2XL has been revised to be about 3% wider, making helmet placement and removal easier; this increase in volume has also improved impact management, now ranking 44% below the regular speed threshold.
• ECE 22.06 performance: for the new ECE 22.06 standard, the SM5 achieves a regular speed impact rating 44% better compared to the current figure of 33%, plus a result 32% better in low-speed linear impact and 31% better in high-speed linear impact than the current standard.
• Multiple density inner liner: ensures the correct density in each area to enhance impact absorption.
• Redesigned chin bar profile: the base area has been specifically sculpted to create a raised relief section that clears the collarbone, with a new, softer EPS liner that extends beyond the shell itself and is covered by a more flexible rubber compound, reducing the likelihood of collarbone injuries.
• Ventilation system: maximizes air circulation and thermal exchange thanks to multiple air intakes and exhaust ports.
• Lightweight: the ECE version of the SM5 helmet weighs 1,350 grams in size M, and 1,420 grams in the ECE DOT version with visor.
• Visor design: has been developed to channel air toward the ports and improve airflow.
• Available versions: the SM5 is available in 2 versions, ECE R 22.06 and ECE R 22.06/DOT.
• The inner and outer surfaces are designed to minimize the effects of oblique impacts. To help combat and mitigate those rotational impact forces, Alpinestars has developed proprietary technology by creating a low friction surface on the inner face of the EPS liner. For the ECE 22.06 standard, which now includes the rotational oblique impact rating, the SM5 scores 70% below the new regulation.
• The patented visor release system ensures that the visor detaches with the correct amount of preset force, regardless of the angle of impact.
• The lightweight outer shell is constructed from technologically advanced impact-resistant thermoplastic in three anatomical shell sizes, plus three individual EPS inner liner sizes, with a combination of inner liner and cheek pad to offer 6 unique sizes and ensure the best fit and protection.
• The lightweight outer shell is constructed from technologically advanced impact-resistant thermoplastic in three anatomical shell sizes, plus three individual EPS inner liner sizes, with a combination of inner liner and cheek pad to offer 6 unique sizes and ensure the best fit and protection.