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. The 509 Altitude Carbon Fiber Helmet is superlight with an industry-leading 100% carbon fiber construction and the easy-to-use Fidlock® magnetic buckle for glove-friendly one-handed operation.

Features:

• 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
• 8 sizes across 3 outer shell molds ensure excellent fit
• Meets and exceeds DOT & ECE 2205 safety certification standards
• DOT/ECE helmet weight from 1230 grams
• Quick release retention strap with slider buckle
• Medium helmet weighs 2 lbs., 13 oz.