Description
The SM5 helmet has been designed to provide MX riders with a helmet that is safe and specifically designed to offer protection and optimal comfort. The lightweight SM5 helmet features a thermo-injected shell that incorporates a special blend of polymers enhanced by different degrees of thickness that is Designed to offer the optimal combination of impact protection and lightness, while the five-density EPS liner ensures the right density in the right area for better shock absorption.

Key Features
Lightweight outer shell is built to last. Constructed from a technologically advanced impact-resistant thermoplastic in three anatomical shell sizes, plus three individual EPS liner sizes with a combination of liner and padding of cheeks to offer 6 unique sizes and ensure the best fit and protection.
The lightweight outer shell is made of Constructed from a technologically advanced impact-resistant thermoplastic in three anatomical shell sizes, plus three individual EPS liner sizes with a combination of liner and padding cheek pads to offer 6 unique sizes and ensure the best fit and protection.

Protection
A designed raised area with padding that effectively reduces the forces transmitted to the collarbone and a patented visor release system that ensures that the visor is released with the correct preset amount of force, regardless of the angle of impact. reviewed the volume of the medium, large, XL and 2XL lower shell to be approximately 3% wider to facilitate donning and doffing of the helmet, where the increase in helmet volume has also improved handling performance impact rating which is now 44% lower than the regular speed threshold.
For the new ECE 22.06 standard, the SM5 achieves a 44% better regular speed impact rating compared to the regular speed threshold. n with the current figure of 33%, as well as as 32% better in low speed linear impact, and 31% better in high speed linear impact than the prevailing standard.
Multi-density internal coating to ensure correct density in the area. correct area for better shock absorption.
Redesigned chin bar profile, where the base area has been specifically sculpted to give a relief section, Raised to clear the collarbone, with a new, softer EPS liner that extends beyond the collarbone. of the helmet shell itself, and is covered by a more flexible rubber compound that provides a lower chance of any type of injury to the collarbone.
Maximized ventilation and high levels of heat transfer exchange thanks to multiple air inlets and exhaust ports.
The ECE version of the SM5 helmet weighs 1,350 grams for a size medium, and 1,420 grams for the ECE DOT version with shield.
The visor has been designed ;ada to direct air towards the ports to improve airflow.
The SM5 is designed to direct air into the ports to improve airflow. available in 2 versions ECE R 22.06 and ECE R 22.06/DOT.

Structure
The internal and external surfaces are designed to minimize the effects of oblique impacts. To combat and mitigate those rotational impact forces, Alpinestars has designed a patented technology creating a low-friction surface on the inner surface of the EPS liner. For ECE 22.06 standard, which now includes rotational oblique impact rating, the SM5 scores 70% below the new regulation.
The patented visor release system ensures that the visor It is released with the correct preset amount of force, regardless of the angle of impact.