Alpinestars Youth Motocross Helmets

The Alpinestars SM3 Youth Helmet is built for younger riders. It delivers the same protection and performance found in Alpinestars’ adult range. Designed for MX, Enduro, and off-road use, it combines lightweight construction, strong ventilation, and advanced impact protection. As a result, young riders stay safe and comfortable in all conditions.

Every feature works together to build confidence, improve comfort, and enhance safety. This helmet supports young riders as they develop their skills.

Key Features:

• Advanced Shell Construction – Uses a thermo-injected polymer blend. Varying thickness improves impact resistance while keeping weight low.
• Optimised Ventilation – Includes 10 intake vents and 7 exhaust ports. This ensures strong airflow and effective cooling.
• Rotational Force Protection – A low-friction EPS coating reduces rotational forces during angled impacts. This helps mimic the brain’s natural protection.
• Patented Visor Release System – The visor releases at a set force. This helps reduce strain on the neck during a crash.
• Multi-Density EPS Liner – A 5-piece liner with 4 densities manages impact energy more effectively.
• Hydration Compatibility – Built-in channels allow easy routing of hydration tubes.
• Eco-Friendly Comfort Liner – Made from recycled materials. It improves comfort while lowering environmental impact.
• Customisable Fit – Replaceable crown and cheek pads allow a more precise fit as the rider grows.
• Enhanced Chin Protection – Reinforced chin area improves impact performance beyond standard requirements.
• Emergency Release System – Allows quick and safe removal of cheek pads while the helmet stays on.
• Secure Fit – A 25mm soft chin strap with stainless steel D-rings keeps the helmet firmly in place.
• Certified Protection – Meets both DOT and ECE 22.06 standards for global use.

Overall, the Alpinestars SM3 Youth Helmet delivers high-level safety, excellent airflow, and lasting comfort. It gives young riders the confidence to ride harder and progress faster.

Sizing

To determine which helmet size fits you best, measure the widest circumference of your head using a flexible measuring tape or piece of string; approximately 2cm above your eyebrows and ears as illustrated below. If your head measurement falls between two sizes, it is generally recommended to select the smaller of the two.

For maximum safety and comfort, take note of the following points when fitting the helmet (and securely fastening the chin strap):

• Helmet may take some effort to slide over your head, but should not be overly difficult
• Should fit snuggly around the crown of your head without creating uncomfortable pressure points
• The top padding presses on the top of your head
• The cheek pads press against your cheeks, so that your teeth touch the inside of your cheeks when opening / closing your mouth
• There should be no space to slide two fingers between the helmet and your temple
• Hold the helmet on either side and without moving your head, try to move the helmet up and down, and side to side. It should not be easy to move and you should feel the skin of your head and face being pulled
• Your eyes should be located in the center of the helmet's viewpoint