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Helmets / Helmets / Road Helmets
Kask Protone Helmet Yellow Fluo
Kask Protone Helmet Matt Black
Kask Protone Helmet Red
Kask Protone Helmet Black
Kask Protone Helmet Matte Blue
Kask Protone Helmet Grey Matt
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
Kask Protone Helmet
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 Matte Blue
Kask Protone Helmet Grey Matt
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
Kask Protone Helmet

Kask
Protone Helmet

Mfg PartNum:
  (80 customer reviews)
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Lightweight & Aero

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.

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.

Features

  • Eco-Leather Chinstrap: Chin pad with a synthetic leather chinstrap. The hypoallergenic and washable chinstrap is extremely comfortable and helps to avoid skin irritation.
  • 3D Dry Padding: The tridimensional 3D DRY padding utilizes a multi-layer open cell construction process: high technology for the best comfort and performance.
  • Coolmax Fiber: Removable and washable inner padding in Coolmax material.
  • Inner Frame: The innovative inner strengthening frame offers greater mechanical strength and a better compactness. In case of shock, it prevents the helmet from breaking into many pieces, allowing greater safety for every rider.
  • Octo Fit: Rubberized Micro Dial adjuster provides improved finger grip. Floating cradle contact points combine internal gel pads for optimum comfort. These supports are designed to oscillate freely through 180° allowing a perfect fit on any shaped head. The Skeletal Brackets of the cradle have been designed and refined to provide the best fit and support whilst being as light as possible.
  • Aero Control: Incredibly aerodynamic and top performing shell, tested in a wind tunnel and able to provide a really impressive CX rate. Any position the head will assume the outflow of the air will be perfectly in line with the helmet.
  • High Visibility: High visibility stickers for maximum safety even in poor visibility conditions.
  • MIT: MIT Technology guarantees a higher head safety, with complete polystyrene protection thanks to the polycarbonate layer that covers the shell on the top, on the base ring, and on the back.
  • Weight: 215g (M size)

Sizing

  • Small: 50 - 56cm or 19-11/16in - 22-3/64in
  • Medium: 52 - 58cm or 20-15/32in - 22-53/64in
  • Large: 59 - 62cm or 23-15/64in - 24-13/32in

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: CHE00037.211 M 

Mfg PartNum: CHE00037.210 M 

Mfg PartNum: CHE00037.211 L 

Black - Small

Mfg PartNum: CHE00037-221-056 

Black - Medium

Mfg PartNum: CHE00037-221-058 

Black - Large

Mfg PartNum: CHE00037-210-062 

White - Small

Mfg PartNum: CHE00037-201-056 

White - Medium

Mfg PartNum: CHE00037-201-058 

White - Large

Mfg PartNum: CHE00037-201-062 

Matte Black - Small

Mfg PartNum: CHE00037-211-056 

Matte Black - Medium

Mfg PartNum: CHE00037-211-058 

Matte Black - Large

Mfg PartNum: CHE00037-211-062 

Matte Blue - Small

Mfg PartNum: CHE00037-256-056 

Matte Blue - Medium

Mfg PartNum: CHE00037-256-058 

Matte Blue - Large

Mfg PartNum: CHE00037-256-062 

Olive Green Matte - Small

Mfg PartNum: CHE00037-390-056 

Olive Green Matte - Medium

Mfg PartNum: CHE00037-390-058 

Olive Green Matte - Large

Mfg PartNum: CHE00037-390-062 

Grey Matte - Small

Mfg PartNum: CHE00037-389-056 

Grey Matte - Medium

Mfg PartNum: CHE00037-389-058 

Grey Matte - Large

Mfg PartNum: CHE00037-389-062 

Light Blue - Small

Mfg PartNum: CHE00037-218-056 

Light Blue - Medium

Mfg PartNum: CHE00037-218-058 

Light Blue - Large

Mfg PartNum: CHE00037-218-062 

Red - Large

Mfg PartNum: CHE00037-204-062 

Yellow Fluo - Small

Mfg PartNum: CHE00037-221-056 

Yellow Fluo - Medium

Mfg PartNum: CHE00037-221-058 

Yellow Fluo - Large

Mfg PartNum: CHE00037-221-062 

Ordered by Most Relevant First
5 stars
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(72)
(6)
(1)
(1)
(0)
(90%)
(8%)
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Perfect for me
rating
by Anonymous
Portland
2 of 2 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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Awesome helmet
rating
by Anonymous
Tampa Florida

This helmet fits perfectly not like the general sized helmets. Great ventilation and lightweight - very happy!

Reviewed 8/6/2021
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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
1 of 1 customers found this review helpful.

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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Put to the test!
rating
by N6CK
Santa Cruz CA
4 of 4 customers found this review helpful.

I had a hard crash on the Unbound Gravel (DK) 200 on June 5. Shredded my kit, and put some measurable dents and scrapes on my Kask Protone helmet. Hit back up on the bike and carried on for another 100 or so miles. Not even a hint of a headache following the crash. My left shoulder was another story. Great helmet, great protection, easy to recommend for road and gravel rides! Stay active, be well, from this 70 year old cyclist.

Reviewed 6/18/2021
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Offers good protection.
rating
by Anonymous
Cycling Enthusiast

Trusted brand, offers good protection during crash. sad to throw out after a crash.. but you have to once you see a crack. Essentially does the job.

Reviewed 1/6/2022
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What youd expect from a high end helmet
rating
by Anonymous
Competitive Racer
SF Bay Area
3 of 3 customers found this review helpful.

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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Excellent helmet
rating
by Don

Comfortable, light weight and nice leather strap . Using it for long rides training for IMAZ with no hot spots or other issues.

Reviewed 10/11/2021
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So Cool!
rating
by coyvicsvicoy
Cycling Enthusiast
Los Angeles
3 of 3 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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Best Helmet I've had
rating
by Denise
Orlando

Aero, light, breathable and fits well. I love it so much I'm waiting for the matte white to be in stock to get it also.

Reviewed 9/16/2021
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Great low profile helmet... no mushroom head!
rating
by Anonymous
Cycling Enthusiast
Los Angeles, CA
1 of 1 customers found this review helpful.

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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Excellent Helmet !!!
rating
by edwyntorres
Puerto Rico

A comfortable very light, great looking helmet!!! Recommended!!!

Reviewed 8/26/2021
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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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The Protone offers a great, adjustable fit in a less conspicuous form factor.
rating
by Dr J
Cycling Enthusiast
Central Oregon
2 of 2 customers found this review helpful.

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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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 happy with this purchase; fits well and very nice quality.
rating
by Anonymous
1 of 1 customers found this review helpful.

Very good aero helmet

Reviewed 2/15/2021
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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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