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509 Altitude Helmet

The 509 Altitude helmet is designed and built from the ground up with 4 ideals in mind: Safety, Performance, Fit, & Style. The Altitude helmet excels across the board.

Innovative aerodynamic channels run across the entire contour of the helmet. The Altitude helmet features 6 integrated vent scoops that provide necessary ventilation to keep you comfortable when riding. Overall the Altitude features 8 total intake/exhaust vent ports. And for those cold days, snap in the included cold weather breath box. The unique aerodynamic visor features a locking top center mount that holds the visor in place and prevents unwanted visor movement.‚ 

The Altitude was designed with two key fit metrics in mind: Rider fit & Goggle fit. First we created a custom interior EPS, matched with a premium removable liner. The Altitude is available in 11 sizes from Youth Small to Adult 4XL. These 11 sizes are carefully designed across 4 outer shell molds, when our competitors only use 2. This provides a precision fit, while minimizing overall helmet circumference. The neck brace ready, contoured shell base provides a comfortable, yet snug feel when putting the helmet on. The eyeport of the Altitude helmet was carefully crafted to fit our 509 goggles perfectly. The Altitude helmet & 509 brand goggles are two product designed to fit and perform at the highest level when used in combination.


  • 4 Outer shell sizes
  • 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 
  • DOT and ECE 2205 certified 
  • 8 Total oversize intake/exhaust vents 
  • Removable, washable premium liner 
  • Dual density, interlocking eps 
  • Youth DOT/ECE shell starts at 1180 grams 
  • DOT/ECE helmet weight from 1380 grams 
  • ECE helmet weight from 1260 grams