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Catlike Chrono Aero Plus Helmet


Item # KAT0018

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  • Black/White, One Size ($199.99)
  • Red/White, One Size ($199.99)
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Item # KAT0018

Airflow and speed combined.

Even though it's styled with aerodynamics as its first priority, the Chrono Aero Plus Helmet uses Catlike's Dual Flow technology in order to keep your head cool while you race against the clock. It's a fairly straightforward design -- cool air flows into two wind tunnel shaped ports in the front, through channels inside the structure of the helmet, over your head, and finally out the exhaust ports at the tail of the helmet. It's an intuitive system that works to keep you comfortable, while at the same time reducing drag. Which, if you've ever raced in the summertime, is something that you know many other aerodynamic helmets just can't compete with.

A special focus was also placed on the overall fit of the helmet. However, this is easier said than done. After all, time trial tends to favor efficiency over comfort, making the marriage between helmet positioning and a comfortable fit nearly forbidden. Not surprisingly, though, Catlike persevered. Specifically, the portion that covers the ears is molded to fit right against your head. Catlike uses open cell foam, like what you'd find on ski goggles, to pad the flaps against your ears. Additionally, you'll find that this ear-portion of the helmet is quite malleable, allowing the helmet to adapt more comfortably to your TT position. The Chrono Aero incorporates a molded underbelly that curves nicely around the back of your head, which makes the helmet look like the underside of an F1 race car. In fact, it covers the entire rearward portion of the bottom of the helmet's tail, save for a triangular exhaust port at the very back.

In our minds, these features give the Chrono a custom feel, which is something that Catlike prides itself on giving to its riders. And that 'custom' fit and feel translates into a slicker, faster helmet. And speaking of fit, the wheel retention system is quick and simple to use, even with one hand.

The Catlike Chrono Aero Plus Helmet is available in one size that fits 55-60cm heads and in the colors Black and Red.

Tech Specs

[shell] polycarbonate, [impact protection] polystyrene foam
Fit Adjustment:
adjustment wheel
Actual Weight:
Black/White, One Size: 490g
Recommended Use:
time trial and triathlon

Size chart

Fuji Bicycles


Geometry Chart


Altamira LTD

Seat Tube


Effective Top Tube








Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop


Chainstay Length



44 44.0cm 51.5cm


36.3cm 72.1cm


72.0 deg 75.0 deg 6.9cm 40.5cm 97.1cm
47 47.0cm 53.0cm


37.0cm 74.1cm 13.0cm 72.5 deg 74.5 deg 6.9cm 40.5cm 97.7cm
50 50.0cm 54.5cm 54.0cm 37.0cm 76.0cm 14.0cm 73.0 deg 73.5 deg 6.9cm 40.5cm 97.6cm
53 53.0cm 56.0cm 56.0cm 37.9cm 78.3cm 16.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 98.6cm
55 55.0cm 57.5cm 58.0cm 38.9cm 80.1cm 18.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 100.1cm
58 58.0cm 59.0cm 60.1cm 39.7cm 82.1cm 20.0cm 74.0 deg 73.5 deg 6.9cm 40.5cm


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Here's what others have to say...

I just bought this helmet from a store and...

I just bought this helmet from a store and it didn't come with a visor, do you stock just the visor for the catlike time trial helmet? If so how much and how long to ship it to Canada?

Hey there, thanks for the question.

I'm not intimately familiar with this product, but it doesn't appear that Catlike makes a visor for this model. At least, I did not see one available for purchase on their website.

Alternatively, you could contact them directly here:

If you turn your Catlike over and see 4 slots, such as in the photo I attached, then it is lens compatible. I believe they only offer a clear lens but as Lexi said, your best bet is to contact Catlike directly.

If you turn your Catlike over and see 4 slots, such as in the photo I attached, then it is lens compatible. I believe they only offer a clear lens but as Lexi said, your best bet is to contact Catlike directly.