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Kask
Protone Helmet

SALE: $248.96ea.
MSRP:$299.95
That's17%off!
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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.

This one slipped through.

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 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 – 23-3/8 - 24-1/2 Inches
SML
Head Circumference19½"-22"20½"-23"23¼"-24½"   
 
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Nice helmet
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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Best helmet yet.
by Pops

The first thing I noticed when I put this helmet on was how light it was and how it fit perfectly to my head. The chin strap is extremely comfortable. Out on the road I was struck by how quiet and how well ventilated the Protone really is - you totally forget you have it on. This is one extremely well engineered, aerodynamic helmet. It looks fantastic and doesn't interfere with my sunglasses at all. My only issue is the price. I got it on sale but still it's very pricey hence the value rating. If you can afford it, get this helmet. It's a quantum leap forward from my old Giro Atmos helmet.

Reviewed 8/6/2018
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My head is safe
by Anonymous
Competitive Racer

Best price

Reviewed 7/16/2018
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Quantum Leap
by DaveEye
Cycling Enthusiast
Vancouver, BC

The first thing I noticed when I put this helmet on was how light it was and how it fit perfectly to my head. The chin strap is extremely comfortable. Out on the road I was struck by how quiet and how well ventilated the Protone really is - you totally forget you have it on. This is one extremely well engineered, aerodynamic helmet. It looks fantastic and doesnt interfere with my sunglasses at all. My only issue is the price. I got it on sale but still its very pricey hence the value rating. If you can afford it, get this helmet. Its a quantum leap forward from my old Giro Atmos helmet.

Reviewed 7/2/2018
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Lightweight, reassuringly snug fit
by nycracer
Competitive Racer
NYC

I race with this helmet, as do many others this season. Upon trying it, I immediately understood the Protone's popularity. It's very sleek (looks great from any angle) and lightweight, and the tightness adjustment system feels like it's cradling the lower back of your head - a reassuring factor as you're cornering at speed. Very happy with this helmet.

Reviewed 7/5/2018
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I have owned several helmets and didnt really need another one, but made the mistake of trying on a friends newKask Protone and I had to have one. This is the most comfortable helmet yet and now that
by Anonymous

Best in comfort, style, and ventilation. This is my 7th helmet and I ride in Phoenix in the summer.

Reviewed 6/29/2018
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So Cool!
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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This is 1 cool helmet
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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After recieving my replacement, it is top notch.
by Dimitrios
Casual Cyclist
Florida

I recently received a Protone with a small crack. It could be from shipping damage, who knows. Today, I got my replacement, and it is perfect!!!! I am happy with the service. They shipped my replacement, before I even took my defective helmet to a UPS store. I will buy from you again. Thank you for great service!

Reviewed 6/2/2018
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Nice upgrade
by Anonymous

Protone kask helmet has a nice feel. Sizing is true to size and fits comfortably well compared to my old helmet. Nice upgrade and would definitely recommend it to my friends. Worth the bucks!

Reviewed 5/26/2018
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Top notch multi purpose helmet.
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 Ventilation and Fit!
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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Awesome helmet
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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Awesome Helmet
by GoMariners
Cycling Enthusiast
Seattle, WA

Great fit. The price is the lowest I can find comparing other website shipped from UK. The shipping is lightening fast.

Reviewed 3/12/2018
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Super light and aero
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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Great helmet if it fits
by boronsteel
Cycling Enthusiast
San Diego, CA
1 of 6 customers found this review helpful.

If the helmet fits and the fit will not compromise your safety in a crash then it is a worthy investment. Of course, you would not know if the helmet is designed to protect your head until you crash and you do not want to do that to test it. My biggest complaint is I could not use it and returned it because if it is tight enough I would get a headache and if it is too lose it will not serve its purpose. The contour of the helmet is not compatible with my head and I could not get the right tension to keep me headache free and happy rider. The buckle and strap system is one of the best if not the best on the market as the leather strap will not irritate your skin and throat while riding, eating and drinking. Like all helmets and shoes, if the fit is not good do not use them even if you get your hands on a free one. It can be dangerous and quite uncomfortable in the long run!. Kask makes great helmets only if the fit is right! I have tried other models from Kask and unfortunately none fit me to warrant the investment. Some of them have too much plastic in the back I could not put on my Rudy Project (Rydon) glasses as the plastic in the back of the helmet was obstructing the ear pieces from sliding through and staying in place. .

Reviewed 2/22/2018
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Great helmet...light and fits properly
by Anonymous
Cycling Enthusiast
Sacramento

Purchased this helmet for road use as well as some triathlon races.

Reviewed 2/8/2018
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Best helmet I've used to date - comfort, speed and looks - this has it all.
by WestchesterBiker
Competitive Racer
Westchester, NY
5 of 5 customers found this review helpful.

Still in the early stages of using my new Kask Protone. Initially drawn to it by positive reviews from ride buddies. Compared to my previous helmets I can tell and feel that this is made with a view to cutting the air efficiently. It is comfortable with good venting and a high quality retention system, which on a ride lasting several hours on what could be a hot day, is critical. My previous helmet looked like a mushroom on my head - this does not. Plenty of flexibility in the retention to accommodate cold weather skull cap or liner. Sunglasses fit without problems. My only issue is that it feels a bit too snug on my forehead which I expect is more a function of my head shape rather than being any sort of design flaw.

Reviewed 2/10/2017
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Great helmet and if going to Buy one get it from western bike works great price
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 Satisfaction
by EDUEE
Alabama, U.S.

Fit perfect and lightweight, really confortable during the rife and excellent quality.

Reviewed 1/22/2018
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