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.

Features:

• 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
• 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
• Quick release retention strap with slider buckle
• Medium helmet weighs 3 lbs., 3 oz.