Mainline MIPS Helmet
Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet Mainline MIPS Helmet


Mainline MIPS Helmet


1 in stock



Sizing Chart

Free return shipping within the USA!
All apparel and protection items are eligible for FREE return shipping, for the first return, within the USA. This gives you peace of mind when ordering products that may not fit right. Please note, the product must be in new condition with all original packaging.

Smith Mainline MIPS Helmet

Made for going big, going fast, or both, the Smith Mainline is the 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.


    • 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
    • Adjustable visor
    • Hybrid X-STATIC® / Ionic+® anti-bacterial performance lining for odor resistance
    • MIPS® Brain Protection System reduces rotational forces caused by angled impacts to the head

    Tech Specs

    Core Material: Complete Koroyd® coverage for lightweight, energy-absorbing and ventilated impact protection and EPS foam
    Shell Material: Polycarbonate
    Adjustable Fit: Yes
    Ventilation: 21 fixed vents for consistent airflow
    MIPS Protection: Yes
    Safety Certification: CPSC CE EN 1078 and ASTM F1952 downhill certified
    Intended Use: MTB
    Warranty: 2 years

    Specs subject to change without notice. Please check with manufacturer for the most up-to-date information.

    Smith Mainline MIPS Helmet: Matte Stone / Moss / SM: E007420XL5155 - Matte Amethyst / Bone / SM: E007420WP5155 - Matte Slate / Fool's Gold / Terra / SM: E007420XI5155 - Matte Black / SM: E007429RX5155 - Matte Black / MD: E007429RX5559 -