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Smith Optics Mainline MIPS

Smith Optics Mainline MIPS
  • Color: Matte Sage - Red Rocks
  • Color: AC - Rocky Mountain Enduro
  • Color: Matte Black
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 Mainline is our Smith's 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 EN1078 and ASTM F1952 (Downhill) certified

Fit / Integration
- Designed for ultimate integration with Smith MTB goggles for maximum comfort, fit, and venting
- 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® / XT2® anti-bacterial performance lining for odor resistance
- Weight (Size M, MIPS®): 27 oz / 770 g

- Small: 51-55 cm
- Medium: 55-59 cm
- Large: 59-62 cm


Smith Mainline Tech

Part Numbers

Option MPN Store SKU
AC - Rocky Mountain Enduro / Small E0074234B5155 408-1032+7
Matte Black / Small E007429RX5155 408-1032+1
Matte Black / Medium E007429RX5559 408-1032+2
Matte Black / Large E007429RX5962 408-1032+3