509 ALTITUDE 2.0 OFF-ROAD HELMET - SCI-FI GREEN (2025)

Altitude 2.0 Offroad Helmet

Elevate your game with the next-generation performance of the 509 Altitude 2.0 Offroad Helmet featuring the latest in weight-saving design and breathable comfort. Trail or track, the Altitude's bestselling package twists the throttle wide open on airflow with a 40% larger chinbar intake and rear exhaust vents to keep you cool no matter what. Top of the line in every way, it includes the Fidlock® magnetic strap buckle for easy one-handed operation, plus GoPro® mounting capability.

Features

• XS to 4X sizes available in three shells for optimal fit and minimal weight
• Upper vents for optimal airflow - Hi-Flow
• Go-Pro® mounting capability, improved design
• Fidlock® chinstrap strap closure for easy in and out
• Perfect fit between helmet eyeport and 509 goggles
• 509 helmet bag included

Specs

• Weight: DOT/ECE helmet as low as 1200 grams

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