Like this site? Help us to make it better.


Tour Tech 2014: Kask unveils Protone helmet

Tour de France Tech 2014: Helmet developed with Team Sky designed to improve aerodynamics and heat transfer

Kask has unveiled a new top-level road helmet called the Protone that Team Sky have started to use in the Tour de France.

Over the past couple of weeks, several manufacturers have announced new road helmets designed with aerodynamics in mind, Bell, Giro and Smith among them.

“The Protone has been developed in close collaboration with Team Sky’s riders and sports scientists to give an advantage in the majority of the Tour stages,” say Kask. “The helmet has one of the lowest drag coefficients (cx) of any ventilated helmet, and among the fastest rates of heat dissipation too.”

Kask don’t quantify their aero claims or put any figures on the helmet’s ability to dissipate heat.

Modelled here by Belarusian hardman Vasil Kiryienka before the start of the Tour, the Protone is the fourth Kask helmet to be developed in collaboration with Team Sky following the Mojito, the Bambino time trial helmet and the Infinity aero helmet.

“Pro-cycling is about marginal gains and we’ve spent many months and countless hours examining data from the wind tunnel, from rider-positional analysis, from thermodynamic studies and, of course, feedback from Team Sky to create our most advanced design yet,” said Kask CEO Angelo Gotti.

“The Protone takes into account the riders’ posture and how they behave while riding, for example catering for the rider taking off their glasses and inserting them into the the helmet without increasing drag.”

The Protone is lightweight, hitting the scales at a claimed 210g, and Kask reckon that the Octo Fit adjustment system will fit any kind of head shape. It uses removable and washable inner padding, made from Coolmax fabrics which have an antimicrobial treatment.

Kask have continued to use their Multi In-Moulding Technology (MIT) to create a polycarbonate cover for the top, base ring and the back of the helmet’s shell. This is joined to the inner polystyrene cap via inmoulding technology.

Kask will display the helmet at the August Eurobike show, held in Germany, and it will be available to buy at the start of 2015. We don’t yet have a price.

Mat has been in cycling media since 1996, on titles including BikeRadar, Total Bike, Total Mountain Bike, What Mountain Bike and Mountain Biking UK, and he has been editor of 220 Triathlon and Cycling Plus. Mat has been technical editor for over a decade, testing bikes, fettling the latest kit, and trying out the most up-to-the-minute clothing. He has won his category in Ironman UK 70.3 and finished on the podium in both marathons he has run. Mat is a Cambridge graduate who did a post-grad in magazine journalism, and he is a winner of the Cycling Media Award for Specialist Online Writer. Now over 50, he's riding road and gravel bikes most days for fun and fitness rather than training for competitions.

Add new comment


midschool | 9 years ago

Might just be the pics, but it seems to have loads of volume at the top of the helmet. Almost like it is sitting an inch higher than it should?

WolfieSmith | 9 years ago

Looking at the size of the vents and how much of Froome's bare bonce showed through in today's post race interview I reckon he's going to be sporting the Richie Porte striped forehead look come Paris.

I wear a light skull cap now after scaring the crap out of myself in the mirror a few summers back. I thought 'Nooooo.??!' I'm too young for liver spots..'

Latest Comments