Alpinestars SM5 Sail blue pink cross helmet

SM5 was designed to provide MX riders with a safe and specially designed helmet to offer optimal protection and comfort. The lightweight SM5 helmet features a thermo-injected shell that incorporates a special polymer blend enhanced by varying degrees of thickness that is designed to offer the optimal combination of impact protection and lightness, while the five-density EPS liner ensures the correct density in Correct area for better impact absorption.

An engineered raised area with padding effectively reduces forces transmitted to the collarbone and a patented visor release system that ensures the visor is released with the correct pre-determined amount of force, regardless of impact angle.

The lightweight outer shell is constructed from a technologically advanced impact-resistant thermoplastic in three anatomical shell sizes, plus three individual EPS inner liner sizes with a combination of inner lining and cheek padding to offer 6 unique sizes and to ensure the better fit and protection.

Revised the medium, large, XL and 2XL lower shell volume to be approximately 3% wider to make the helmet easier to put on and take off, where the increased volume of the helmet also improved helmet handling performance impacts that are now 44% lower than the normal speed threshold.

For the new ECE 22.06 standard, the SM5 achieves a normal speed impact score 44% better than the current figure of 33%, as well as a linear impact score 32% better at low speed and 31% better at high speed compared to the prevailing standard.

The internal and external surfaces are designed to minimize the effects of oblique impacts. To help combat and mitigate those rotational impact forces, Alpinestars engineered another proprietary technology creating a low-friction surface on the inner surface of the EPS liner. For the ECE 22.06 standard, which now includes oblique rotational impact assessment, the SM5 scores 70% under the new regulation.

Multiple density inner lining to ensure the correct density in the correct area for better impact absorption.

New redesigned chin bar profile, where the base area has been specially sculpted to give a raised section, raised to free up the collarbone, with a new softer EPS liner that extends beyond the helmet shell itself and is covered by a more flexible rubber compound that offers a reduced chance of any type of collarbone injury.

The patented visor release system ensures that the visor is released with the correct pre-determined amount of force, regardless of the impact angle.

Maximized ventilation and high levels of heat exchange thanks to the air intakes and multiple exhaust.

The ECE version of the SM5 helmet weighs 1,350 grams for a medium size, and 1420 grams for the ECE version with visor.

The visor was designed to direct air into the ports for better airflow.