The 509 Altitude 2.0 Carbon Fiber Helmet is built for riders who demand lightweight performance without compromising safety. Hand-laid from 3K carbon fiber composite, it offers an unbeatable strength-to-weight ratio while keeping the helmet starting at just ~1150 grams. Certified to DOT and ECE 22.05 standards, it provides confidence on motocross tracks, snowmobile trails, and off-road adventures. Features like the Fidlock® magnetic chinstrap, adjustable upper vents, and removable Pro-Series Breathbox ensure comfort and adaptability in any condition. An integrated GoPro® mount lets you capture every ride, while the included helmet bag makes storage and transport easy.
Why Riders Choose It
Premium 3K carbon fiber shell for maximum protection with minimal weight
Ultra-light design (~1150 g) reduces fatigue on long rides
DOT and ECE 22.05 certified for trusted safety standards
Fidlock® magnetic chinstrap allows one-handed closure, even with gloves
Adjustable vents and removable Pro-Series Breathbox for airflow control
Built-in GoPro® mount for capturing trail and track adventures
Includes a protective 509 helmet bag
Product Details
Shell Material: Hand-laid 3K Carbon Fiber Composite
Weight: Starting at ~1150 g
Certification: DOT & ECE 22.05
Chinstrap: Fidlock® magnetic closure
Ventilation: Adjustable upper shutter vents
Extras: Removable Pro-Series Breathbox, GoPro® mount, protective helmet bag
Sizes Available: XS–4X (three shell sizes)
Manufacturer: 509
