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KASK Protone Helmet

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214,95 20,05 discount
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  • Free tracked delivery to Portugal
  • Trustpilot review 9.2 out of 49.437 reviews

Pros & Cons

  • Lightweight, aerodynamic.
  • Good ventilation for an aerodynamic helmet with 15 ventilation apertures.
  • Leather straps for extra comfort.
  • The design puts it between an all-out aero helmet and a highly ventilated helmet.
  • The leather chinstrap needs some cycling trips to feel comfortable.
Read more on what our customers have to say about this product


Brand KASK
Including VisorNo
Ventilation ★★★
Road Helmet Type All-round helmet
Weight 228 grams
Extra protection No


The Protone is the ''do it all'' aero helmet by KASK. The Protone offers the optimal combination of aerodynamics and cooling. Thanks to its Octofit adjustment system and divider ear straps you can adjust your Protone easily, quickly, and precisely for a perfect fit. Its eco-leather strap is very comfortable and prevents irritation to the skin. This strap is washable just like the helmet pads. Thanks to these features the Protone is the helmet perfect for both competitive professionals and
stylish touring riders.

Kask didn't just trust on Team Sky's input alone, so they spent a great amount of time on data research, position analysis (how does a rider move on the bike) and thermodynamic studies. For example: what is the best way to put away cycling glasses in the helmet without increasing drag.

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Including Visor No No No No
Model Year 2017 / 2018 2017 / 2018 2019 / 2020 2019
Ventilation ★★★ ★★★ ★★★ ★★★
Road Helmet Type All-round helmet All-round helmet All-round helmet All-round helmet
Helmet Size S / M / L / 50 - 56 cm S / M / L / 51 - 55 cm S / M / L / 51 - 55 cm S / M / L / 50-56 cm
Colour Nero / Bianco / Blue Matt / Nero Lime / Nero Matt / Nero Matt-Rosso Bright Red / Matte Black / White / Fluo Yellow / Matte Black / White / Silver / White / Red Matte Bright Red/Dark Red / Matte Black Fade / Matte White/Silver / Matte Black/Blue Pearl / Matte True Spruce Blue / Yellow / Orange / White / Black
214,95 169,95 224,95 159,95
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Customer photos


9.3 / 10 Average from 158 reviews | Write a review

9.3 / 10

158 reviews


  • Light weight (8)
  • low weight (7)
  • Aero (6)
  • Comfortable (5)


  • Expensive (4)
  • None (2)
  • Could be finished better (1)
  • None at this price! (1)

Most recent reviews

9 / 10

Rob, 28 August 2019

Good looking....fits perfect....Good protection

10 / 10

John, 17 August 2019

Good Helmet

Good helmet that sits well and has plenty of adjustments. Comfortable and doesn’t move about

10 / 10

Paul, 11 August 2019

Super fit

This helmet has a great fit in any direction. It feels a rounder fit than Specialized. Looks superb on. Could be finished with more finesse though.


  • Great fit
  • Looks fantastic
  • Lightweight


  • Could be finished better

10 / 10

David, 7 August 2019


Upgraded from the Mojito, this is in another league. I now get very little sweat running down my glasses, the odd droplet as opposed to the flood I was used to, also the nifty retention feature for the glasses means they no longer move. Supremely comfortable and very light. 100% happy


  • Style
  • Sweat wicking
  • Comfort
  • Weight
  • Quality

8 / 10

Jacek, 3 August 2019

excellent helmet

excellent good looking helmet. expensive


  • overall


  • expensive

All specifications

Detailed product description


3D Dry
The padding in this helmet uses 3D-Dry technology, which offers optimal comfort and performance.

Aero Control
This helmet is fitted with a wind-tunnel tested aerodynamic shell. Whichever way you’re looking, the air exhaust will always be able to do its work.

ECO Chinstrap
An anti-allergenic and washable chin strap with high levels of comfort. Helps prevent skin irritation.

M Moulding
This technique connects the inner polystyrene layer to the outer polycarbonate one, together offering more shock absorption.

MIT Technology
The MIT technology ensures your head is optimally protected. The polycarbonate layer covers the entire helmet: base, lower ring, and rear.

Octo Fit
The rubber micro dial adjustment system on the helmet can be operated with a single hand. The dial can be turned 180 degrees, allowing you to quickly and easily tune the fit. The Skeletal brackets have been designed to optimally support your head.

The pads have an antibacterial coating designed to prevent any foul smells.

Customer Service
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