Description

O’Neal – Sierra II Flat Helmet

  • The O’Neal Sierra II Flat Helmet feels like that dependable lid you grab every weekend, light, well-vented, and ready for whatever track or trail you throw at it.

    Balanced shell weight, efficient venting, and a plush liner that keeps its shape moto after moto.

    Why We Like It:
    Everything about it feels dialed: airflow, comfort, and control without unnecessary extras.

    Why It’ll Work for You:
    If you want straightforward performance, easy goggle fit, and comfort that holds up, this helmet just works.

    Variants / Options:
    Available in several colorways and sizes for a dialed-in fit.

    Key Features:

    • Lightweight, balanced shell design

    • Airflow channels for active cooling

    • Moisture-wicking comfort liner

    • Wide goggle port and adjustable peak

    • Shell in constructed with ABS

    • Weight: 1590g (± 50g)

    • Moisture wicking, removable/washable air channeled comfort liner

    • Vent holes for optimal ventilation

    • Integrated face shield

    • Height adjustable helmet shield

    • Padded Chin Strap with Double-D safety lock

    • Meets DOT and ECE 22.05 safety standards

    • Designed for Street, Enduro, Side by Side and Adventure Bike’s

    • Replacement parts available