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Kask
Protone Helmet

  (45 customer reviews)
2999
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$299.95
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Kask's Protone Helmet was first seen on the heads of Team Sky riders at the 2014 Tour de France, and now this aero lid can be all yours. Its sleek profile was designed with the aid of computational fluid dynamics software to create a shape that retains 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 – 23-3/8 - 24-1/2 Inches
SML
Head Circumference19½"-22"20½"-23"23¼"-24½"   
 
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(41)
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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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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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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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Great fit, comfortable and looks good
rating
by VanBiker
Cycling Enthusiast
Vancouver, BC
1 of 1 customers found this review helpful.

The Protone fits well, is comfortable and the slimmer profile makes it more attractive than many bulbous helmets on the market. The quality of finish is excellent and the level of comfort is high. A helmet is definitely worth spending extra money on if you find it comfortable, you like the looks and it provides some level of protection. As one who struggles with sweat in the eyes, the Protone offers little help. That said, I have yet to find a helmets solves that problem. Hats and headbands are my only solution. As usual, Bike Tire direct service was excellent.

Reviewed 5/6/2019
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Amazing and highly adjustable
rating
by misterbentley
Cycling Enthusiast
NYC
0 of 2 customers found this review helpful.

Love this helmet.

I've always been fearful of buying helmets online as there is generally a round or oval config for the shape...Kask's design is amazing. No issue and a dialed-in fit every time.

Reviewed 5/13/2019
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kask Protone
rating
by Anonymous
0 of 1 customers found this review helpful.

This helmet is the lightest and most comfortable Ive ever owned. Dont look any further. Just do yourself a favor and buy it from Bikestiresdirect. You wont regret it.

Reviewed 4/28/2019
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This is a top notch helmet
rating
by Anonymous
Texas

I love the fit. Very adjustable. The leather chin strap is very nice. I have taken a hard wreck in one and got my clocked cleaned pretty good but no concussion. Great helmet.

Reviewed 4/26/2019
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Light weight good fit
rating
by Anonymous
NYC

This is my second Protone one I bought Large which was too Large. This time bought medium it fits snug with enough room for caps. Very light and comportable. Havent test safety(I hope Ill never have to)

Reviewed 4/26/2019
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Excellent Helmet
rating
by Z5_Rider
Cycling Enthusiast
New York, NY
1 of 1 customers found this review helpful.

Bought a Medium on sale and my 58 head fit perfectly. Adjustments are more advanced than other helmets on the market. Great chin strap. Bonus, I do not look like a mushroom.

Reviewed 11/9/2018
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Great Helmet, nice snug fit.
rating
by Robb
Cycling Enthusiast
Long Beach, CA

Nice dual adjustable head strap, gives nice, snug fit on head.

Reviewed 12/6/2018
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Great Ventilation and Fit!
rating
by Anonymous
Cycling Enthusiast
Santa Monica, CA
1 of 1 customers found this review helpful.

I have an enormous skull and this is a great fit, which is a rare treat. Cool and quiet. Love!

Reviewed 7/6/2017
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