509 Altitude Carbon Fiber 3K Helmet with Fidlock®

509 Altitude Carbon Fiber 3K Helmet w/ Fidlock | MoreFreakinPower

$ 279.97 $ 399.95

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509 Altitude Carbon Fiber 3K Helmet with Fidlock®

Built with Fidlock™ ECE Certified Carbon Fiber 3K
You're going to LOVE the fit. Try it for 30 days and experience our perfect fit. If you don't love it, send it back for an exchange or full refund

One of the 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. At the peak of performance is the 509 Altitude 3K Carbon Fiber Helmet —our lightest, most durable helmet yet, equipped with the Fidlock® magnetic buckle for easy one-handed operation.

  • Comes standard with universal camera mount
  • Comes standard with Fidlock® easy-open magnetic strap clasp
  • Comes standard with our new “Pro Series” Liner and breathbox
  • Innovative aerodynamic channels & 8 intake/exhaust vent ports
  • 8 sizes across 3 outer shell molds ensure an excellent fit
  • Meets and exceeds DOT & ECE 2205 safety certification
  • 3K ECE helmet weight from 1120 grams

The Altitude 3K helmet meets or exceeds ECE 2205 safety certification standards. It features an innovative dual density, interlocking EPS foam liner that provides top crash protection in the event of an accident.


Innovative aerodynamic channels run across the entire contour of the helmet. The Altitude 3K helmet features 6 integrated vent scoops that provide the necessary ventilation to keep you comfortable when riding. Overall the Altitude features 8 total intake/exhaust vent ports.


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. And because fit is only as good as the overall weight, the Altitude starts at a class-leading 1120g.


We wanted this helmet to not only perform at the highest level but to look good doing it. The shell features sleek, yet aggressive lines that provide an innovative and unmatched look. Everything - from the integrated front mouth vent to the innovative ventilation channels, to the sweeping upward-kicked visor - provides a flowing and seamless transition. Each Altitude comes standard with an innovative universal camera mount that mounts securely in seconds to the top visor mount.

509 Altitude Fidlock Helmet