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Kask Protone Helmet

$299.95ea.
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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.

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 – 23-3/8 - 24-1/2 Inches
SML
Head Circumference19½"-22"20½"-23"23¼"-24½"   
Ordered by Most Relevant First
5 stars
4 stars
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1 stars
(43)
(3)
(0)
(1)
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(91%)
(6%)
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Reviewed 5/6/2019
by VanBiker
Cycling Enthusiast
Vancouver, BC
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Great fit, comfortable and looks good

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.

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Reviewed 5/13/2019
by misterbentley
Cycling Enthusiast
NYC
Value Rating
Overall Rating
0 of 2 customers found this review helpful.
Amazing and highly adjustable

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.

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Reviewed 4/28/2019
by Anonymous
Overall Rating
0 of 1 customers found this review helpful.
kask Protone

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.

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Reviewed 11/9/2018
by Z5_Rider
Cycling Enthusiast
New York, NY
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Excellent Helmet

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.

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Reviewed 4/26/2019
by Anonymous
Texas
Overall Rating
This is a top notch helmet

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.

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

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)

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Reviewed 12/6/2018
by Robb
Cycling Enthusiast
Long Beach, CA
Value Rating
Overall Rating
Great Helmet, nice snug fit.

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

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Reviewed 7/6/2017
by Anonymous
Cycling Enthusiast
Santa Monica, CA
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Great Ventilation and Fit!

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

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Reviewed 2/10/2017
by WestchesterBiker
Competitive Racer
Westchester, NY
Value Rating
Overall Rating
5 of 5 customers found this review helpful.
Best helmet I've used to date - comfort, speed and looks - this has it all.

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.

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Reviewed 8/6/2018
by Pops
Overall Rating
2 of 2 customers found this review helpful.
Best helmet yet.

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.

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Reviewed 1/13/2017
by Bikebaker
Cycling Enthusiast
Lodi, CA
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Sleek Modern Helmet

I use this product for every bike ride, short or long. It's stylish, comfortable and different than all others. I have received many compliments.

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Reviewed 1/9/2017
by Kevin
Tarzana
Overall Rating
1 of 1 customers found this review helpful.
Proton fits like a glove

I tried Giro first, but found the fit isn't for my head shape, the giro helmets are for rounder type heads, my head is thinner on the sides even though I wear xl helmets. The proton fits my head like a glove, even, and balanced. It's ducts keep my head nice and cool on hot days. During 50f days, it was too efficient, making my head cold, but I should have worn something underneath the helmet to cut the wind. I've had a ton of helmets over the last 30 years, and although it isn't the lightest, it fits the best!! Being aerodynamic, it reduces air drag in fast descents. I always catch my friends on descents, not sure what percentage is attributed to the helmet, but I'm sure it contributes in reducing drag.

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Reviewed 1/9/2017
by Turre
Competitive Racer
Baja, Mexico.
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Great aero helmet

This helmet is light and good looking. Kask makes quality, light and fancy cycling helmets.

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Reviewed 12/29/2016
by Gryder
Cycling Enthusiast
Irvine, CA
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
Great looks, great fit and aero!

I was in the market to replace my Giro Synthe that I had to trash because of crash caused by a SUV cutting me off. I've always owned Giros but they never quite fit me right. I have a 59cm circumference head so according to Kask sizing, I should be wearing a large but the medium fits me great. I have a more round than oval shape head so that maybe the reason. Both the helmet and chinstrap are way more comfortable than my old Synthe. I love how the chinstrap lays perfectly flat against your face. That has to save a watt or two. ,-) I do have one minor quibble, my POC sunglasses do not fit that well in the air vents. Not a deal breaker but it's the reason I gave it 4 stars instead of 5.

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Reviewed 7/16/2018
by Anonymous
Competitive Racer
Value Rating
Overall Rating
0 of 1 customers found this review helpful.
My head is safe

Best price

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Reviewed 7/2/2018
by DaveEye
Cycling Enthusiast
Vancouver, BC
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Quantum Leap

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.

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Reviewed 7/5/2018
by nycracer
Competitive Racer
NYC
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Lightweight, reassuringly snug fit

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.

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Reviewed 6/29/2018
by Anonymous
Overall Rating
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

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

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Reviewed 7/27/2016
by TSR VP
Competitive Racer
SoCal
Value Rating
Overall Rating
Exactly as promised

I had been debating over getting this helmet for a while and finally pulled the trigger. I'm glad I did as all the positive reviews are valid. This is my secod Kask helmet and like the first, this one did not disappoint. It has a nice compact fit, good looks, and low weight. I've only ridden with this helmet so far in the warmer months and compared to a traditionally styledventilated helmet I seemed at first to be getting a bit hot under the hat. Then I figured out just to tilt my head up just a fraction higher and I would get a rush of air across my melon and I'd feel fresh as a daisy again. Whether it's an aero advantage or not who knows. I would buy it again just for its looks, weight, comfort and the high quality of Kask products.

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Reviewed 6/2/2018
by Dimitrios
Casual Cyclist
Florida
Value Rating
Overall Rating
After recieving my replacement, it is top notch.

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!

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