509 Altitude 2.0 Carbon Fiber Snowmobile Helmet - Galaxy

amped for even more intense riding, the next generation of 509 Altitude helmets introduces a new level of fierce performance. At the forefront is the 509 Altitude 2.0 Carbon Fiber Helmet, featuring a handcrafted carbon composite design that is lighter, stronger, and more streamlined than ever. Designed for those who crave an aggressive ride, it also includes the convenient Fidlock® magnetic strap buckle, a built-in universal camera mount, and advanced airflow control venting.

KEY FEATURES

• Hand lay-up carbon fiber composite construction
• XS to 4X sizes available in three shells for optimal fit and minimal weight
• Upper vents with on/off shutter closure for airflow control
• Fidlock® chinstrap strap closure for easy in and out
• Go-Pro® mounting capability, improved design
• Perfect fit between helmet eyeport and 509 goggles
• Pro-Series Breathbox for complete protection, removable for optimal air flow 
• 509 helmet bag included

SPECS

• Starting Weight: DOT/ECE 1150 grams

Safety Update: We've resolved all concerns related to the 2025 509 Helmet Recall by removing impacted sizes and verifying Fidlock routing on affected models.

Product availability varies between locations, and some products are only available online. Please contact your nearest Martin Motor Sports here for availability.

American customers: We are unable to ship current 509 & Klim products to the US at this time, but we are able to ship non-current 509 & Klim product to you. See the selection here.