Fizik says the Kudo Aero shares much of its design with the Kudo; the difference is where each puts its effort. The Kudo Aero adds a smooth top shell and a rear breakaway spoiler to cut drag and cools through two front vents and rear extractors (290 g claimed). The Kudo prioritises ventilation and low weight for hot days and long climbs, and its top side vents hold your sunglasses (280 g claimed). Both have Mips Air Node, the same fit system, the included rear light and the same sizes, and Virginia Tech gave both four stars with almost identical scores (12.72 and 12.86). Fast riding and racing: Kudo Aero. Heat and climbing: Kudo.

Do Fizik helmets have Mips?

Yes, all four do, in two versions. The Kudo, Kudo Aero and Kassis use Mips Air Node: an ultralight, low-friction layer built into the padding that dissipates rotational forces in a crash and comes out for cleaning. The Kyros uses Mips Evolve Core: a low-friction layer between the liner and the shell, which Fizik says helps dissipate rotational forces in angled impacts.

Does the helmet come with a rear light?

The Kudo, Kudo Aero and Kassis do: a USB-rechargeable LED taillight with several modes for day and night, which fits into the same rear port as the removable reflector, plus a helmet bag. The Kyros comes with the removable reflector and is compatible with the Fizik LED taillight, but Fizik lists the light as not included.

Which Fizik helmet size do I need?

Measure your head circumference just above the eyebrows and ears. Fizik uses one chart for the Kudo, Kudo Aero, Kassis and Kyros: S 52–56 cm, M 56–59 cm, L 59–61 cm (20.5–22, 22–23, 23–24 in). If you measure exactly 56 or 59 cm you are on the line between two sizes and Fizik gives no tie-break, so try both if you can; the occipital dial and the crown adjustment then fine-tune the fit.

How safe are Fizik helmets in the Virginia Tech tests?

Virginia Tech tested three of them in 2025 (lower score is better): Kudo Aero four stars, 12.72; Kudo four stars, 12.86; Kassis three stars, 13.72. The Kassis is listed as a mountain helmet but is scored on the same bicycle-helmet scale. The Kyros has not been tested yet.

FIZIK Kudo Aero Cycling Helmet

Silver

€197,99

~~€290,00~~ €197,99

Tax Included
EU Destination Selected (Spain)

+3 units in stock

The essentials

Best for

Road racing
Fast gravel
XC racing

FIZIK Kudo Aero Cycling Helmet - Silver

Technologies

Safety rating

★★★★★12.72

Virginia Tech Helmet Lab, independent impact testing. Lower score is better.

See this helmet on Virginia Tech ↗

Specifications

Claimed weight	290 g
Certifications	EU (CE) and CPSC, per Fizik
Fit system	Micrometric occipital dial + crown adjustment
Mips	Yes — Mips Air Node
Rear light	USB LED taillight included
Sizes	S 52–56 · M 56–59 · L 59–61 cm

Aero shell and rear spoiler

The top of the Kudo Aero is a smooth, sleek shell that Fizik says keeps the airflow attached to reduce drag, and a rear breakaway spoiler delays airflow separation — unusual on a traditional half-shell helmet.

Front vents, rear extractors

Despite the aero focus, two front vents and rear heat extractors keep you cool during hard efforts, Fizik says. The rounded shape is also designed to reduce surface grip in an impact, potentially lessening the force of a crash.

Crossbridge in the EPS

A crossbridge element embedded in the EPS foam spreads impact forces across the whole helmet for full-coverage protection, according to Fizik.

Mips Air Node

A version of the Mips rotational-impact system built into the helmet's padding rather than added as a separate plastic liner, so the vents stay clear and weight stays down.

Dialed-in fit

A micrometric dial at the occipital stabiliser adjusts tilt for a personal fit and eyewear compatibility; a crown adjustment fine-tunes the helmet to the exact shape of your head, and lightweight ripstop webbing adjusts fully around the ears.

Integrated rear light

A removable passive reflector at the rear and a USB-rechargeable LED taillight that fits into the same port, with several modes for day and night riding. Fizik includes the light and a helmet bag.

FIZIK Kudo Aero Cycling Helmet - Silver

Compare with

	FIZIK Kudo Aero Cycling Helmet - SilverFizik’s aero half-shell for fast road, gravel and XC riding and racing.	FIZIK Kudo Cycling Helmet - Black Choose the Kudo for more ventilation on hot days and long climbs, top vents that hold your sunglasses and 10 g less (280 g, Fizik).	FIZIK Kyros Cycling Helmet - Black Choose the Kyros for a road and gravel helmet with Mips Evolve Core and three-position crown adjustment, if you don’t need the rear light in the box.
Regular price	€197,99	€207,99	€159,95
Safety rating	★★★★★ 12.72	★★★★★ 12.86	—
Claimed weight	290 g	280 g	275 / 295 / 325 g (S / M / L, CE version)
Certifications	EU (CE) and CPSC, per Fizik	EU (CE) and CPSC, per Fizik	CE EN 1078:2012 or CPSC 1203, by market version
Fit system	Micrometric occipital dial + crown adjustment	Micrometric occipital dial + crown adjustment	Micrometric occipital dial + 3-position crown pins
Mips	Yes — Mips Air Node	Yes — Mips Air Node	Yes — Mips Evolve Core
Rear light	USB LED taillight included	USB LED taillight included	Compatible with the Fizik LED taillight (sold separately)
Sizes	S 52–56 · M 56–59 · L 59–61 cm	S 52–56 · M 56–59 · L 59–61 cm	S 52–56 · M 56–59 · L 59–61 cm

FIZIK Kudo Aero Cycling Helmet - Silver

Size guide

Size	Head circumference (cm)	Head circumference (in)
S	52–56	20.5–22
M	56–59	22–23
L	59–61	23–24

How to measure

Wrap a tape measure around your head just above the ears and eyebrows, keeping it level, and read the circumference in centimetres. Where two sizes overlap, head shape decides: try both, or ask us.

SIZESelect your size SMALL MEDIUM LARGE

Description

Fizik’s aero half-shell for fast road, gravel and XC riding and racing. It shares the Kudo’s fit system, Mips Air Node and included rear light, and adds a smooth top shell and a rear breakaway spoiler that Fizik says delays airflow separation; Virginia Tech rated it four stars (12.72, tested 2025). If you ride mostly in the heat or climb a lot, the more ventilated Kudo is the better pick.