Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards
  • Just In
  • Learn

Smith
Mainline Mips Full-Face Helmet

4.672077922077922 out of 5 stars
308 Reviews
$217.00 - $310.00
Up to 30% off
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 308 ratings

Review Summary

1 Stars - 5 reviews
2 Stars - 1 reviews
3 Stars - 16 reviews
4 Stars - 46 reviews
5 Stars - 240 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?

View

Selecting an option will reload the available reviews on the page
5 out of 5 stars

May 30, 2024

Helmet works!

I like my mainline helmet. I cased a jump and landed on my head. I hurt in many places but not my head. Did its job well.

there
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

May 26, 2024

Highly recommend

I have been wearing one of these helmets for about a year. It is comfortable, well vented and light. After crashing at a bike park and landing face first on a rock I can also confidently say that it offers great protection also. I broke the helmet,but walked away with only a small cut on my face. I also bought the same helmet as a replacement. If you're considering buying a mainline, get one.

Johnny
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

May 17, 2024

Solid

Great product. Don’t normally bother writing reviews but just went over the bars and landed on what would have been my face if it hadn’t been for this helmet. Body pretty banged up but not a scratch on my face/head

Conor
smithoptics.com

Originally reviewed on smithoptics.com

3 out of 5 stars

March 10, 2024

GREAT PRODUCTS…BUT!

I ordered the Mainline MIPS after weeks of researching the right helmet, and decided on SMITH, due to its reputation and quality craftsmanship. And that’s apparently clear after receiving the product. However, it arrived with a torn box and small, but noticeable rub on the face guard. And it truly appears as if the item was resold after receiving it back as a return, which is disappointing, given that it’s my first SMITH experience, now dampened by this incident. It’s more a trust thing, than anything else: why sell an open box product as “new?” As well, why, knowing that I’m a first time buyer, would a company not want that experience to be the absolute best? Great MTB Helmet though! Extremely WELL MADE!!! Quality! Ruggedness, light on the head! Outstanding aeration…just can’t give it 5 stars due to what SMITH allowed for my first time dealing with them.

auteur7
smithoptics.com

Originally reviewed on smithoptics.com

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

February 6, 2024

I've owned Smith ski helmets, first Smith bike helmet.

Great fitting, great looking, confidence booster. I haven't taken a fall with the Mainline, but feel that it will keep me safe if that day comes.

Bryan
smithoptics.com

Originally reviewed on smithoptics.com

5 out of 5 stars

November 21, 2023

Favorite Full Face

Great helmet, light weight, well vented, awesome build quality. easy adjustments with interior pads for optimal fit. fits true to size. great combo with Squad XL goggles.

Duncan
smithoptics.com

Originally reviewed on smithoptics.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

August 23, 2023

Did it’s job well

Saved my wife’s face on a fall. This helmet did its job well and bought another one.

Tyler
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