Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. Lighter, stronger, and even more comfortable thanks to a new hand lay-up fiberglass construction, the 509 Altitude 2.0 Helmet excels in any terrain or condition. Includes the Fidlock magnetic strap buckle for easy one-handed operation, plus customizable features like a removable Pro-Series Breathbox to get you through a full season of extremes.

KEY FEATURES

• Hand lay-up fiberglass composite construction for stronger, lighterweight, and better fit construction
• DOT/ECE certified in USA
• One piece eye port trim
• 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, removeable for great air flow

SPECS

• Starting Weight:DOT/ECE 1200 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.