509 Altitude 2.0 Carbon Fiber Snowmobile Helmet - Sharkskin

Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. Leading the charge is the 509 Altitude 2.0 Carbon Fiber Helmet with a new hand lay-up carbon composite construction that’s lighter, stronger, and straight-up sleeker than anything before it. For those who like to get aggressive, it includes the Fidlock® magnetic strap buckle for easy one-handed operation, a built-in universal camera mount, plus 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.