NAVIGATION

509 Altitude 2.0 Hi-Flow Helmet 21

509 Altitude 2.0 Hi-Flow Helmet 21 | MoreFreakinPower

$ 299.95

F01009700-130-051
Quantity
- +

509 Altitude 2.0 Hi-Flow Helmet 21

Built with Fidlock™ DOT & ECE Certified
FIT GUARANTEE
You're going to LOVE the fit. Try it on and experience our perfect fit. If you don't love it, send it back in new and unused condition within 30 days for an exchange or full refund



Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. For those who run at redline, the new 509 Altitude 2.0 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 fiberglass construction that makes this helmet lighter, stronger, and even more comfortable.






  • Hand lay-up fiberglass 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 for complete protection, removable for optimal airflow

Specs
  • Weight: DOT/ECE 1200 grams

509 Altitude Fidlock Helmet