509 Altitude 2.0 Helmet

The second generation of the best-selling 509 Altitude series, designed to ride even harder, unleashes an entirely new beast. Lighter, stronger, and more comfortable, thanks to the new hand-laid fiberglass construction, the 509 Altitude 2.0 helmet excels in any terrain or condition. Featuring the Fidlock® magnetic strap buckle for easy one-handed use and customizable features like the removable Pro-Series Breathbox, it is built to take you through the extremes of the entire season.

• Hand-laid fiberglass composite construction for a stronger, lighter, and better-fitting structure
• DOT/ECE certified in the United States; ECE available in Canada and Europe
• One-piece eyeport trim
• Sizes XS - 4X available in three shells for optimal fit and minimal weight
• Upper ventilation ports with on/off closure for airflow adjustment
• Fidlock® chin strap buckle for easy entry and exit
• Go-Pro® mount compatible with improved design
• Perfect fit between the helmet’s eyeport and 509 goggles
• Pro-Series Breathbox for complete protection, removable for maximum airflow

• Weight: As low as 1200 grams for DOT/ECE