Fizik launches its first range of bike helmets, featuring unique adjustment system, integrated rear lights and huge vents on the road model

Italian brand Fizik, best known for its saddles and shoes, has released a range of four helmets to cover road and gravel riding, triathlon/time trialling, and mountain biking. Aside from the triathlon/TT option, the helmets feature Mips technology designed to improve safety and snap-on rear lights. All of the models have received five stars (the maximum available) in the Virginia Tech Helmet Ratings. 

> Find out all you need to know about Mips 

We all knew that helmets were on the way from Fizik because they’ve been spotted being worn by sponsored athletes over recent weeks, and now full details have been released.

2025 Fizik Kudo helmet side (credit: road.cc)

First up, the Kudo (£269.99) is designed for road, gravel and cross-country mountain biking. It’s highly ventilated and reasonably lightweight, Fizik claiming weights from 270g (the medium-sized sample we have in for review hit our scales at 305g). One of the most noticeable features is the huge rear exhaust vent, shared with the Kudo Aero and Kassis (below).

2025 Fizik Kudo helmet rear exhaust (credit: road.cc)

Fizik’s senior product manager Alex Locatelli said, “Why is it important to have the back opening so large? Mainly because in physics it’s called the Venturi effect. You need a very big opening on the back to accelerate the airflow coming from the front of the helmet, and that helps to decrease the total temperature that is generated inside.

“This is something that we tested in the wind tunnel. We not only test to make the helmet more aerodynamically efficient, but we also have a fake head with different sensors, where we push the air at different speeds towards the helmet, to better understand the airflow inside and also to measure the temperature that the head might get to while exercising."

2025 Fizik Kudo Aero helmet rear side (credit: road.cc)

The Kudo Aero (£269.99) is a similar helmet but with an outer shell covering the top section. There are just a couple of small vents on the temples.

2025 Fizik Kudo Aero helmet rear exhaust (credit: road.cc)

“We have closed the shell and have a spoiler on the back that increases the aerodynamic efficiency,” says Alex Locatelli. “There’s no opening. We see in the market now some helmets that have holes – some grills, for example – to make the helmet a little bit more breathable with the airflow. At Fizik, we decided to create a helmet that has no compromise in terms of aerodynamic efficiency.

“All the riders in many of the WorldTour races are using aero helmets, even in hot conditions, because the gains that helmet can provide them are so high that they take no chance in using an open helmet. We wanted to create the best aerodynamic helmet in the market by closing everything. And that's why it's important to understand how the flow inside here works with the front opening and the exhaust on the back”.

“If we wanted to have some holes in the shell, you might lose two, three, four watts, for example, which is nothing for the average rider, but for pro riders, that's quite a lot. That's why we decided to have no compromise and to create a helmet specifically dedicated to aero efficiency. It can also be used as a winter helmet in some countries, so it’s versatile.”

2025 Fizik Kudo Aero helmet wearing (credit: road.cc)

Again, Fizik claims weights from 270g. Our medium-sized sample weighed in on our scales at 290g.

2025 Fizik Kunee helmet (credit: fizik)

The Kunée (£359.99) is designed for time trial and triathlon.

“Developed through extensive wind tunnel and CFD testing, its teardrop profile, smooth shell, and strategically corrugated side panels minimise drag while optimising airflow,” says Fizik. “A honeycomb-grid ventilation system above the visor ensures cooling without compromising aerodynamics, while additional vents and lightweight padding enhance airflow and thermoregulation.”

What are those corrugated side panels all about?

“The corrugation helps to separate the air from the body and also, in a way, simulates bigger helmets,” says Alex Locatelli. “Although big helmets are heavier and very difficult to wear, they’re very efficient in terms of aerodynamics because they move the air outside the shoulder, so the aerodynamics of the whole rider and bicycle is much more efficient. We were thinking about a solution that could provide the same aerodynamic efficiency without creating a big helmet. We also have some exhaust on the back and some front air ventilation to help the rider not get too hot inside.”

Both mirrored and clear visors are included. They fix in place magnetically. You also get a rigid helmet case as part of the package. Fizik claims weights from 350g without a visor.

2025 Fizik Kassis helmet (credit: fizik)

The final model in the range is the Kassis (£189.99), which is designed for off-road trail riding and comes with an adjustable front peak. It has claimed weights from 330g.

The Kudo, Kudo Aero and Kassis models use the Mips Air Node System that’s intended to reduce rotational motion to the head in certain angled impacts and thereby lower the chance of injury in the event of a crash.

2025 Fizik Kudo helmet interior MIPS (credit: road.cc)

Fizik’s senior product manager Alex Locatelli says, “Air Node is the latest generation of MIPS system, where you don't have the typical yellow liner of MIPS, but the padding and the system are just one component. That makes the helmet lighter, and allows us to reduce the volume of the helmet since we don't need to create space for the additional liner.”

2025 Fizik helmet light on (credit: fizik)

These three helmets are fitted with a reflector that you can remove and replace with a 35-lumen rear light (included), which snaps into place. The light is said to offer 90mins of battery life in solid mode and up to 180mins in flashing mode.

2025 Fizik Kudo helmet back light (credit: fizik)

It’s USB-C rechargeable and IP54 rated. That means it’s protected against dust and spraying/splashing water. The light, available separately for £29.99), isn’t compatible with the Kunée.

All of the helmets are in-moulded, meaning that the shell and EPS (expanded polystyrene) core are moulded together rather than being formed separately and then bonded together.

The Kudo, Kudo Aero and Kassis helmets are available in three sizes covering 52-61cm, while the Kunée comes in two sizes covering 54-61cm.

2025 Fizik Kudo Aero helmet fit system (credit: road.cc)

Fizik has engineered its own micro-adjustable internal retention system. [You get crown/tilt adjustment as well as a dial-operated fit adjustment at the rear.]

“We have our own roll fit. It can be adjusted down and up in four different positions. The front of the roll fit can also be adjusted according to your head shape. If your head is more oval-shaped or rounded, you can move some pins that you have in the crown alongside the roll fit, and that makes the helmet much more versatile.”

We have the Fizik Kudo and Kudo Aero in for test here at road.cc so stay tuned for reviews shortly.

fizik.com