509 Altitude 2.0 Carbon Fiber Helmet – Lightweight, Fidlock, DOT/ECE

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