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Kask Protone Helmet Yellow Fluo
Kask Protone Helmet Matt Black
Kask Protone Helmet Red
Kask Protone Helmet Black
Kask Protone Helmet Orange Fluo
Kask Protone Helmet Matte Blue
Kask Protone Helmet Grey Matt
Kask Protone Helmet Matte White
Kask Protone Helmet Olive Green Matt
Kask Protone Helmet White
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Yellow Fluo
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Kask Protone Helmet Yellow Fluo
Kask Protone Helmet Matt Black
Kask Protone Helmet Red
Kask Protone Helmet Black
Kask Protone Helmet Orange Fluo
Kask Protone Helmet Matte Blue
Kask Protone Helmet Grey Matt
Kask Protone Helmet Matte White
Kask Protone Helmet Olive Green Matt
Kask Protone Helmet White
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue
Kask Protone Helmet Light Blue

Kask
Protone Helmet

Mfg PartNum:
  (63 customer reviews)
2999
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$299.95
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Preorder: This item is not yet in stock but is available for preorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all preorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your preorder can be cancelled by contacting our customer service team.

Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

The Kask Protone Helmet's sleek profile was designed with the aid of computational fluid dynamics software to create a shape that retrains its efficiency in the wind through all head angles. The result is a helmet that's quiet and low-drag in any position on the bike, instead of merely touting numbers calculated in a wind tunnel under controlled conditions.

For a highly personalized fit, Kask's Octo Fit retention system features a rubberized dial tension adjuster, plus vertical adjustability and movable rear cradles. The Coolmax lining has an antimicrobial treatment, and the chin strap is made from eco-leather that's washable along with being super soft to prevent irritation.

Available in multiple sizes and colorways. A helmet storage bag is also included. Made in Italy.


Sizing:

  • M - 52-58 cm 20-1/2 - 22-7/8 Inches
  • L - 59-62 cm 3-3/8 - 24-1/2 Inches

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

SML
Head Circumference19½"-22"20½"-23"23¼"-24½"   
 

Mfg PartNum: CHE00037.201 L 

Mfg PartNum: CHE00037.210 M 

Mfg PartNum: CHE00037.211 L 

Mfg PartNum: CHE00037.211 M 

Black - Small

Mfg PartNum: CHE00037.210 S 

Black - Medium

Mfg PartNum: CHE00037.210 M 

Black - Large

Mfg PartNum: CHE00037.210 L 

White - Small

Mfg PartNum: CHE00037.201 S 

White - Medium

Mfg PartNum: CHE00037.201 M 

White - Large

Mfg PartNum: CHE00037.201 L 

Matt Black - Smail

Mfg PartNum: CHE00037.211 S 

Matt Black - Medium

Mfg PartNum: CHE00037.211 M 

Matt Black - Large

Mfg PartNum: CHE00037.211 L 

Red - Medium

Mfg PartNum: CHE00037.204 M 

Red - Large

Mfg PartNum: CHE00037.204 L 

Matt Blue - Small

Mfg PartNum: CHE00037.256 S 

Matt Blue - Medium

Mfg PartNum: CHE00037.256 M 

Matt Blue - Large

Mfg PartNum: CHE00037.256 L 

Light Blue - Small

Mfg PartNum: CHE00037.218 S 

Light Blue - Medium

Mfg PartNum: CHE00037.218 M 

Light Blue - Large

Mfg PartNum: CHE00037.218 L 

Olive Green Matt - Small

Mfg PartNum: CHE00037.390 S 

Olive Green Matt - Medium

Mfg PartNum: CHE00037.390 M 

Olive Green Matt - Large

Mfg PartNum: CHE00037.390 L 

Grey Matt - Small

Mfg PartNum: CHE00037.389 S 

Grey Matt - Medium

Mfg PartNum: CHE00037.389 M 

Grey Matt - Large

Mfg PartNum: CHE00037.389 L 

Red - Small

Mfg PartNum: CHE00037.204 S 

Red - Medium

Mfg PartNum: CHE00037.204 M 

Red - Large

Mfg PartNum: CHE00037.204 L 

Yellow Fluo - Small

Mfg PartNum: CHE00037.221 S 

Yellow Fluo - Medium

Mfg PartNum: CHE00037.221 M 

Yellow Fluo - Large

Mfg PartNum: CHE00037.221 L 

Orange Fluo - Small

Mfg PartNum: CHE00037.222 S 

Orange Fluo - Medium

Mfg PartNum: CHE00037.222 M 

Orange Fluo - Large

Mfg PartNum: CHE00037.222 L 

Ordered by Most Relevant First
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(58)
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Perfect for me
rating
by Anonymous
Portland
1 of 1 customers found this review helpful.

I first bought a giro aether and returned it after trying it on a couple times. It felt like it sat over my head and the spherical mips felt too loose, like it would slide right out of the way with a crash. Could move the thing around with my hands easily, felt gimmicky. Parts felt cheap too. Got the protone and it is a solid, perfect fit. It sits around my head and is snug yet comfortable. I have a somewhat �longer/skinny� head. Strap and parts are much more robust and I like the leather chin deal. MIPS would be nice, but it feels great. Put in a good amount of miles, but no real tests.

Reviewed 8/18/2020
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The Protone offers a great, adjustable fit in a less conspicuous form factor.
rating
by Dr J
Cycling Enthusiast
Central Oregon

The fit of the Protone is wonderfully adjustable and ventilated with an end result that makes it disappear.

Reviewed 3/18/2021
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Very happy with this purchase; fits well and very nice quality.
rating
by Anonymous

Very good aero helmet

Reviewed 2/15/2021
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JUST AS I EXPECTED FROM KASK AND THE INCREDIBLE SPEED OF THE DELIVERY TO HAWAII
rating
by Anonymous
Cycling Enthusiast
Honolulu, Hawaii

I have tried every helmet at every bicycle shop here on the island of Oahu. None of them fit the way i wanted. Had experience with KASK and decided to stick with what i know works.

Reviewed 10/23/2019
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Great low profile helmet... no mushroom head!
rating
by Anonymous
Cycling Enthusiast
Los Angeles, CA

I was looking for a nice low profile helmet and this was the ticket. It's not cheap but you can tell the build quality as soon as you take it out of the box. I got the matte black and might get a white one too for those days where you need to be more visible. The leather strap thing under the chin is a nice touch for added comfort.

Reviewed 9/29/2020
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What youd expect from a high end helmet
rating
by Anonymous
Competitive Racer
SF Bay Area

It is a helmet and, not having crashed (knock wood), I cant comment on its protective charateristics. It is well ventilated, so much so that I sweat less in it than my Kask Vertigo or Giro, so that is a big plus. The chin retention strap is easy to adjust and comfortably holds the helmet firmly in place. The size adjustability knob also functions smoothly, dials in head diameter perfectly, and is easy to adjust, even on the fly. The only small complaint is the foreaft adjustment harness which was a bit bothersome at first - but once I got used to it I hardly noticed any chafing on the back of my neck. All in all, it is an expensive helmet, but its adjustability allows for pretty much a perfect fit. Funny thing though is that while its head volume is as advertised, the shell is smaller than the Kask Vertigo, so it appears, outwardly, to be smaller than it actually is. In its price point, I would recommend it.

Reviewed 5/24/2019
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So Cool!
rating
by coyvicsvicoy
Cycling Enthusiast
Los Angeles
2 of 2 customers found this review helpful.

I like this Matte Black finish of the Protone! It is literally and figuratively so COOL. Because it is Matte Black, you can pair it with any color jersey and you will still look like you have a matching kit. The vents are really well designed that it cools my head during a hot Southern California mountain climb! Also the design is so Aero that it gives you that advantage, now I can also enjoy the minimal gains that this terrific product provides and I love it....I have TWO of these already and planning on getting a 3rd one!!!! That's how much I like the Protone helmet from KASK.

Reviewed 2/9/2018
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Awesome helmet
rating
by Arcee
CA
1 of 1 customers found this review helpful.

Fits great, looks great and lots of ventilation, love the Matte black color.

Reviewed 7/3/2017
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Super light and aero
rating
by Anonymous
Casual Cyclist
1 of 1 customers found this review helpful.

The Protone is a great helmet for long rides. Recently used it while riding a century a few weeks ago in 80 degree weather. I have a black helmet and I never felt over heated because it's well ventilated. It's also super light and fairly aero.

Reviewed 5/30/2017
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Cool and sleek
rating
by Chenz
Chicago IL

A great looking helmet! Definitely can feel the cooling effects of all the vents. Easily adjustable. Definitely recommend it

Reviewed 9/26/2019
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Very nice helmet
rating
by JB
Santa Rosa Ca

This is the best Helmet I've ever own Very comfortable

Reviewed 2/7/2019
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Nice helmet
rating
by stmoon
Cycling Enthusiast
Beaverton, OR

Well ventilated. Leather(ish) chin strap feels nice and soft. Snug fit for me. Check if you plan to wear a cap underneath.

Reviewed 9/11/2018
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This is 1 cool helmet
rating
by Bikin''Beagles
Cycling Enthusiast
Sacramento

I ride in the Sacramento valley where in the summer the temps can easily exceed 100 degrees. The Kask Protone helmet meets the challenge with flying colors. Since I have few shingles on the roof, I also have to wear a wrap on my head, and I stay cool all day long, look pretty cool as well.

Reviewed 6/11/2018
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Top notch multi purpose helmet.
rating
by Anonymous
Casual Cyclist
Chicago, IL

Love it, very comfortable and light weight helmet. A nice upgrade from the Vertigo 2.

Reviewed 4/30/2018
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Great helmet and if going to Buy one get it from western bike works great price
rating
by Anonymous
ny ny
1 of 1 customers found this review helpful.

This is my second One I would not buy any other helmet fits great and evaporate sweat great and very comfortable .

Reviewed 1/25/2018
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Great light comfortable helmet
rating
by MV
Cycling Enthusiast
LA
1 of 1 customers found this review helpful.

Great helmet, been using it for several months now. Lightweight and comfortable, lots of vents throughout. I notice that the outer shell is very soft and brittle, well as least the matte version of this helmet, so be careful not to scratch or drop it. The front padding soaks up a lot of sweat when climbing in direct sunlight so I had to position the padding up towards the vents to help dry it out.

Reviewed 1/20/2018
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Super high quality helmet
rating
by Anonymous
Fruita,CO
1 of 1 customers found this review helpful.

Excellent adjustability and high quality chin strap.

Reviewed 1/1/2018
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Awesome helmet
rating
by Brian
Vancouver WA
1 of 1 customers found this review helpful.

This is the best fitting helmet with the best chin strap system Ive owned to date. The size is good and the outer shell size feels relatively small for a Large. The only criticism is the clear coating or sealant seems to be peeling in a few internal areas but not a big deal. Highly recommend

Reviewed 10/19/2017
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Top quality
rating
by VJC
1 of 1 customers found this review helpful.

Very adjustable, comfortable and well thoughtout. Best chin strap Ive ever had

Reviewed 3/16/2017
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Light. Protective and Smooth
rating
by paisleigharies
Competitive Racer
Charlottesville, VA
2 of 2 customers found this review helpful.

I bought my first Kask helmet (a Mojito) three years ago at an end of cycling season sale from a shop in Colorado's Rockies. Having finally abandoned my leather helmet for fuller helmer protection in the early 1980's, I have owned scores of plastic-based helmets since then. But I would rate the Kask Mojito to be the most easily adjustable, comfortable, light weight helmet I had ever owned....until I purchased the Kask Protone. It is nothing short of amazing that the Protone is actually lighter than the Mojito, offers the same easily adjustable features and comfort, and provides even greater protection of the noggin than does the Mojito. Yes, this is a lot to pay for a helmet. But when I consider what an hour in an ER with a brain injury might cost, this is a minimal investment. That's why I also bought a Protone for my infrequently riding spouse. I want her to have the same level of protection as I have.

Reviewed 3/18/2021
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