Skip to main content

Smith Optics Mainline MIPS

Smith Optics Mainline MIPS
  • Color: Matte Amethyst / Bone
  • Color: Matte Bone Gradient
  • Color: Matte Stone / Moss
Please select options


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.

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

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

Part Numbers

Option MPN Store SKU
Matte Amethyst / Bone / Small E007420WP5155 MAI31633973M
Matte Amethyst / Bone / Large E007420WP5962 MAI3183358G
Matte Stone / Moss / Small E007420XL5155 MAI28230433M
Matte Stone / Moss / Large E007420XL5962 MAI28480269G