Give credit where credit's due. Thank your mom, your legs, and your gear for giving you the opportunity to land that rocky gap. Made for going big, going fast, or both, the Smith Mainline is our pinnacle, downhill certified enduro bike helmet. Safety innovations like KOROYD™ and Mips® provide energy-absorbing impact protection so you have the confidence to get aggressive on the trail. It doesn't matter if you're slaying the EWS in Whistler or suffering through the last stage of your local enduro race, you need a breathable, lightweight helmet that pairs well with goggles and fits like a glove. The Mainline integrates with your bike goggles for efficient venting and fog-free vision. Multiple pad sets including liners and neck-rolls let you customize the fit.

    Protection
    Complete KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection
    Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head
    CPSC CE EN 1078, ASTM F1952 downhill, and NTA-8776 E-Bike certified

    Fit / Integration
    Designed for ultimate integration with Smith performance goggles for maximum comfort, venting and storage convenience
    AirEvac ventilation system integrates with Smith goggles for fog-free lenses
    Three washable cheek pad kits, two crown liners and two neck rolls let you fine-tune the fit
    D-ring chin strap fastener for a snug fit

    Features
    21 fixed vents for consistent airflow
    Adjustable visor
    Hybrid X-STATIC® / Ionic ® anti-bacterial performance lining for odor resistance
    Weight (Size M, Mips®): 27 oz / 770 g