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Smith
Mainline Mips Full-Face Helmet

4.666666666666667 out of 5 stars
294 Reviews
$310.00
Color:Matte Midnight Navy/Sagebrush

Size:

Size Chart

Quantity


Why We Like The Mainline Mips Full-Face Helmet

Smith makes their debut into the world of ultra-light full-face helmets with the all-new Mainline MIPS. Featuring extensive ventilation and lightweight yet tough construction, this helmet offers the airy feel of a half-shell while providing downhill-certified coverage for a boost of confidence on rowdy trails. Advanced protective features include Smith's unique Koroyd crumple zones that go above and beyond to disperse impact forces, as well as a MIPS protective layer that helps mitigate harmful oblique impacts.


Details

  • Smith's lightweight full-face for enduro and downhill
  • ASTM certified for downhill mountain bike racing
  • 21 vents keep you cool during summer shred sessions
  • Koroyd layer provides superior impact absorption
  • MIPS protects against oblique and rotational impacts
  • Comes with multiple pad sizes to ensure a proper fit
  • D-ring fastener is lightweight and super secure
  • Anti-odor pads are removable and washable
  • Item runs small, so we recommend sizing up for best fit
  • Item #SMIZ99F
Activity
downhill, enduro
Visor
adjustable
Audio Compatible
no
Certifications
ASTM F1952-15, Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older
Fit Adjustment
3 different sizes of cheek pads, 2 different sizes of crown liners, 2 different sizes of neck rolls
Ventilation
AirEvac system (21 vents)
Manufacturer Warranty
lifetime
Claimed Weight
[large] 1lb 15.6oz
Shell Material
Aerocore in-mold polycarbonate

Overall Rating

4.5 based on 294 ratings

Review Summary

1 Stars - 5 reviews
2 Stars - 1 reviews
3 Stars - 15 reviews
4 Stars - 45 reviews
5 Stars - 228 reviews

Fits Slightly Small

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?

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3 out of 5 stars

February 13, 2024

Meh

I might get some backlash here, but I may be the only one that hates this helmet. Pros: -Lightweight -Breathable -assorted cheek pad sizes Cons: -No rear tension for a snugger fit -Chin strap is impossible with gloves on *prefer a quicker release like the Bell Quick Air chin strap -sizing is off, the med didnt feel secure on my dome and a small was too snug -i cant pull up my goggles for a quick breather, they flop right back into your face I wore this helmet once on a longer ride and was so ticked the whole time. I fumbled with my gloves every time i wanted to take it on and off for a breather. And i know its not just me because my friend has this helmet and its annoying with the chin strap and gloves. I didnt like how lose it felt, i had to have the chin strap basically choking me and even then i just didnt like the fit. If Smith adds a rear tension adjustor and an easier way chin strap i would love it. Just not for me. Lame.

Ingrid J
Backcountry.com

Originally reviewed on Backcountry.com

5 out of 5 stars

October 13, 2023

Le casque est parfait! Il

Le casque est parfait! Il est super confortable et le design est simple comme j’aime!

Sophie L.
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

July 22, 2023

A great replacement for my old full face

I use this helmet for work and it’s making wearing a full face in this heat bearable. Love the Matte Black look and the vents to keeps cool. The MIPS is great, but can sounds a little creaky when coming down rough stuff. Not very distracting though. Would still recommend it to anyone looking for a lightweight downhill helmet.

Andrew
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

February 14, 2023

Wrecked it - shipped to ER with head trauma. I'm buying another one the next day.

I don't think I'd be sitting here easily ordering a new one today if I was wearing a different helmet yesterday. Absolutely solid piece of equipment, head injury could have been much worse if I was wearing something that sucked. Well done.

Greg
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

February 13, 2023

Best Helmets!

We love Smith! My wife and I love these helmets. We already have open face Smith helmets for MTB and Snowboarding and skiing helmets. These are so lightweight and comfortable. We both change our chin pads for optimal fit. Lots of vents for the hot days high in the Rocky Mountains of Colorado.

derek c.
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

January 20, 2023

Highly recommend

This helmet saved my life. Crashed face first hard coming too high off of a berm. Scratches and dents on the helmet none on my face and head. Also super comfortable, light and ventilated. Glad I didn't go with a detachable chin. Fits my really small head great which is usually a challenge for me. I'd give it 10 stars if that was an option.

Melissa N.
smithoptics.com

Originally reviewed on smithoptics.com

4 out of 5 stars

January 18, 2023

Pretty sweet but…

Really like the helmet but 2 things to improve on would be #1 It’s pretty squeaky when I’m riding. This can get annoying since I ride by myself a lot and this is all I can hear at times #2 The chin strap is old technology. It’s bullet proof but a pain for my kid (7) who has this helmet. It would be nice for me too to unbuckle it easily to remove the helmet while riding uphill. I know Fox has improved on this.

Curt F.
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

December 31, 2022

Awesome fit, design and definitely

Awesome fit, design and definitely saved my head in a crash at the bike park last year.

Samuel S.
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

December 6, 2022

Full face for the win!

What a great helmet! I hardly notice the extra weight over my open face trail helmet and the extra protection makes it my go to for almost every ride. And paired with the MTB XL goggles it's next level!!!

Oliver P.
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

December 6, 2022

Smith mainline and xl goggles

It’s airflow is very breathable and the helmet is very light!!!!! The finish and is stunning and looks amazing with my bike colors and the field of vision is unparalleled especially paired with the XL goggles!!!

Kevin R.
smithoptics.com

Originally reviewed on smithoptics.com