509 Altitude 2.0 Carbon Fiber Snowmobile Helmet - Acid Green (Non-Current)

Pushing boundaries and taking on the most extreme rides, the 509 Altitude series 2.0 introduces a new level of performance. At the forefront is the 509 Altitude 2.0 Carbon Fiber Helmet, featuring a state-of-the-art carbon composite construction for a lighter, more durable, and streamlined design. For those who crave an adrenaline rush, it comes equipped with a convenient Fidlock® magnetic strap buckle, a built-in mount for universal cameras, and customizable airflow vents for optimum ventilation.

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.