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 excellent fit
- Meets and exceeds DOT & ECE 2205 safety certification
- 3K ECE helmet weight from 1120 grams