Brand: 509

Product Code: 509-MX-HEL-AFB-MD

Availability: In stock

$ 179.95 $ 199.95

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509 Altitude Offroad Helmet

Last season the 509 Altitude offroad helmet took the moto and SxS industries by storm. Described as a sleek & aggressive helmet, it is packed with industry-leading features.



The Altitude helmet is constructed from an innovative new thermoplastic poly alloy outer shell material. This all new material allows for one of the lightest helmets in its class, with a starting weight of just 1260 grams. The Altitude helmet comes in 9 total sizes (Youth SM-LG, Adult XS-2XL) from 3 individual outer shell molds. This results in a smaller overall shell profile, a dialed in fit, and the lightest weight possible.

Perfect FIt

Goggle performance is directly affected by the fit of the goggles in your helmet. Mixing a different brand goggle and helmet will only result in decreased goggle performance. The 509 goggle and Altitude Offroad Helmet combo was designed to fit and function perfectly together. Both products were specifically engineered for optimal performance from an industry leading combo fit. The Altitude helmet was engineered from the ground up to provide an improved goggle fit over our previous Evolution shell. Experience the only true helmet & goggle combo in the dirt industry


Safety is our #1 focus and concern at 509. With the development of the Altitude helmet we put an emphasis on safety & quality. First is the dual density internal EPS foam. This provides two innovative levels of crash absorbing protection. Next is our industry leading thermoplastic poly alloy outer shell that provides a high level of puncture prevention. The Altitude helmet is covered by not one, but two world leading safety standards: DOT & ECE 2205 Certification. Our competitors only offer one level of safety certification.


The Altitude gives you the ability to dial in the level of ventilation you need. Every rider is different and rides in a wide variety of climates. We understand the need for ventilation customization and designed the Altitude for exactly that. In total the Altitude has 8 oversized intake & exhaust vent ports.

GoPro Mount

Tired of losing your GoPro? We were too. Lets face it, adhesive mounts frequently fail while riding. Well that’s a thing of the past. Each Altitude includes an innovative rigid GoPro mount that attaches using the top center visor screw. This installs in seconds and eliminates poorly performing adhesive GoPro mounts.