Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal.
509 Altitude 2.0 Carbon 3K Hi-Flow Helmet
![](https://motorbikegears.com/wp-content/uploads/2023/01/509-Altitude-2.0-Carbon-3K-Hi-Flow-Helmet.png)
Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal.