Destroy all forms of dirt with the next-generation comfort and performance of the bestselling 509 Altitude 2.0 Offroad Carbon Fiber Helmet. Hand lay-up carbon fiber composite construction makes it lighter, stronger, and sleeker than anything before it. A larger chinbar intake plus upper exhaust vents keep you cool no matter how heated the session gets. Top of the line in every way, it includes the Fidlock® magnetic strap buckle for easy one-handed operation, plus GoPro® mounting capability.


  • Hand lay-up carbon fiber composite construction
  • XS to 4X sizes available in three shells for optimal fit and minimal weight
  • Upper vents for optimal airflow – Hi-Flow
  • Go-Pro® mounting capability, improved design
  • Fidlock® chinstrap strap closure for easy in and out
  • Perfect fit between helmet eyeport and 509 goggles
  • 509 helmet bag included



  • Weight: ECE helmet as low as 1070 grams