Smith Optics Mainline MIPS Mountain Bike Helmet
Details
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.
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21 fixed vents for consistent airflow
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Adjustable visor
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Hybrid X-STATIC® / Ionic+® anti-bacterial performance lining for odor resistance
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Designed for ultimate integration with Smith performance goggles for maximum comfort, venting and storage convenience
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AirEvac ventilation system integrates with Smith goggles for fog-free lenses
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Three washable cheek pad kits, two crown liners and two neck rolls let you fine-tune the fit
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D-ring chin strap fastener for a snug fit
Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head.
KOROYD ultimate protection absorbs more energy and works better than traditional materials because it creates crumple zones by using core tubular technology. This outperforms other materials at every stage of compression, helping reduce the risk of injury.
Read more about Koroyd at https://www.smithoptics.com/en_US/helmet-koroyd-tech.html#
| Size | Circumference |
|---|---|
| Small | 51 - 55 cm |
| Medium | 55 - 59 cm |
| Large | 59 - 62 cm |
| X-Large | 61 - 65 cm |
How To Fit Your Smith Helmet
Specs
| Weight (g) | 770g (Size Medium) |
|---|---|
| Retention System | D-ring Chin Strap |
| Protection | MIPS (Multi-Directional Impact Protection System) | Complete KOROYD® coverage |
| Certification | CPSC CE EN 1078 | ASTM F1952 downhill | NTA-8776 E-Bike certified |
| Type | Mountain Downhill |
* Subject to change without notice.
Part Numbers
| Option | UPC | MPN | Store SKU |
|---|---|---|---|
| Matte Black / Small | 716736216850 | E007429RX5155 | HEL542792402 |
| Matte Black / Medium | 716736216867 | E007429RX5559 | HEL548653182 |
| Matte Black / Large | 716736216874 | E007429RX5962 | HEL544108762 |
| White/Black / Small | 716736336503 | E007423OD5155 | HEL542561004 |
| White/Black / Medium | 716736336510 | E007423OD5559 | HEL549010434 |
| White/Black / Large | 716736336527 | E007423OD5962 | HEL545663214 |
| Matte Archive Wild Child / Medium | 716736924533 | E007421NZ5559 | HEL658985534 |
| Matte Archive Wild Child / Large | 716736924540 | E007421NZ5962 | HEL659193314 |
| Matte Coyote/Indigo / Medium | 716736924564 | E007421O65559 | HEL616753414 |
