509 Altitude Helmet

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  • Regular price $329.95


One of the industry’s bestselling helmets ever, the 509 Altitude series excels across four key principles: safety, performance, fit, and style. Revolutionary design means precision fit and sleek profiling that exceeds the competition, plus innovative venting and all-day comfort for aggressive riding. The 509 Altitude Helmet features the Fidlock® magnetic strap buckle for easy one-handed operation, plus customizable elements like a removable cold weather breathbox.

  • Removable vent stoppers for customized ventilation
  • Comes standard with universal camera mount
  • Comes standard with Fidlock® easy-open magnetic strap clasp
  • Comes standard with our new Pro Series Liner and Cheekpads
  • Comes standard with a cold weather breathbox
  • Innovative aerodynamic channels & 8 intake/exhaust vent ports
  • 11 Sizes across 4 outer shell molds ensure excellent fit, Youth SM - Adult 4X
  • Meets and exceeds DOT & ECE 2205 safety certification standards
  • One piece eye port trim
  • Perfect 509 goggle fit
  • Revolutionary neck brace ready shell profile
  • Custom fit eps, specially designed for North America
  • Special designed expanded polyurethane chin insert
  • Removable, washable premium liner
  • Dual density, interlocking eps
  • DOT/ECE helmet weight from 1380 grams