Alpinestars SM5 Solid Motocross Helmet

Alpinestars SM5 Solid Motocross Helmet

The brand-new SM5 ECE 22.06 helmet was developed to offer MX riders a helmet that is safely and specifically designed to provide optimal protection and comfort. The lightweight SM5 helmet features a thermoformed shell made from a special polymer blend, reinforced with varying thicknesses and designed to provide the optimal combination of impact protection and low weight. The inner liner consists of a 7-piece construction of expanded polystyrene (EPS) with EPS in five different densities to ensure the right density in the right area for improved shock absorption.

Features:

• The lightweight outer shell is made from a technologically advanced, impact-resistant thermoplastic in three anatomical shell sizes, as well as three individual EPS liner sizes with a combination of liner and cheek padding, to offer 6 unique sizes and ensure the best fit and protection
• A designed, raised area with padding effectively reduces the forces transmitted to the collarbone, and a patented helmet visor release system ensures that the helmet visor is released with the correct, pre-determined force regardless of the angle of impact
• The lower shell volume of the medium, large, XL, and 2XL models has been designed approximately 3% wider to make putting on and taking off the helmet easier. By increasing the helmet volume, the impact management performance has also been improved, which is now 44% lower than the normal speed threshold
• For the new ECE 22.06 standard, the SM5 achieves a 44% better impact rating at normal speed compared to the current 33%, as well as a 32% better linear impact rating at low speed and a 31% better linear impact rating at high speed prevailing standard
• The inner and outer surfaces are designed to minimize the effects of oblique impacts. To combat and mitigate these rotational impact forces, Alpinestars has developed a proprietary technology by creating a low-friction surface on the inner surface of the EPS liner. In the ECE 22.06 standard, which now also includes the assessment of rotational oblique impact, the SM5 achieves a rating of 70% under the new regulation
• Multi-density liner to ensure the right density in the right area for improved shock absorption
• Redesigned chin bar profile, where the base area is specially shaped to create a relief area that frees the collarbone, with a new, softer EPS liner that extends beyond the helmet shell itself and is covered with a more flexible rubber compound, thereby reducing the risk of collarbone injury
• Maximum ventilation and high level of heat exchange through multiple air intakes and exhaust openings
• The helmet visor has been designed to direct the air into the openings to improve airflow
• Cheek pads with ERS Emergency Release System
• Loops for guiding the drinking tube make the installation of the hydration system easier

Specifications:

• The ECE version of the SM5 helmet weighs 1,350 grams for a medium size with helmet visor
• ECE 22-06
• Double D-ring closure

Additional product information

• Emergency system padding (EQRS)

• Double-D