509 Altitude 2.0 Carbon Fiber 3K Hi-Flow Helmet (ECE)


SKU: F01009900-160-051

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Reinvented to ride even harder, the second generation of the bestselling 509 Altitude Snowmobile Helmet series unleashes a whole new animal. For those who run at redline, the new 509 Altitude 2.0 Carbon Fiber 3K Hi-Flow Helmet maximizes airflow with open upper and rear vents plus a 40% larger chinbar intake. Everything else is what you’d expect from one of the world’s bestsellers, including a new hand lay-up carbon composite construction that makes this helmet lighter, stronger, and even more comfortable.


  • 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
  • Go-Pro® mounting capability, improved design
  • Fidlock® chinstrap strap closure for easy in and out
  • Perfect fit between helmet eyeport and 509 goggles
  • Pro-Series Breathbox included
  • Weight: ECE helmet as low as 1050 grams
  • 509 helmet bag included