Fi'zi:k

Kyros CPSC Helmet

What Our Gearhead® Experts Are Saying:

"The Kyros sits in a smart spot in fi'zi:k's helmet lineup — it's not trying to be a pure aero road lid or a dedicated trail helmet, and it's better for it. The MIPS Evolve Core system handles the safety requirement without adding bulk, the wide exhaust vent placement actively moves air rather than just providing passive openings, and the dual crown-and-size fit adjustment accommodates the kind of head-shape variation that a single adjustment dial can't always address. For cyclists who ride road and gravel during the week and hit the XC trails on weekends, the Kyros removes the need to own two separate helmets."

The cleanest helmets in a quiver are the ones that cover the most ground without being designed specifically for any single discipline. The fi'zi:k Kyros CPSC Helmet occupies exactly that position — built to perform credibly on a road sportive, a full-day gravel route, and a cross-country trail lap without the fit, ventilation, or safety compromises that come with forcing a sport-specific design outside its intended context.

The MIPS Evolve Core system addresses rotational impact forces — the oblique loads that occur in the majority of real-world cycling crashes — by allowing the helmet's inner liner to move independently of the outer shell at the moment of impact. The Evolve Core variant integrates this functionality with minimal effect on the helmet's overall weight and profile, keeping the Kyros competitive with non-MIPS options in its category while providing a meaningful safety upgrade. In-molded EPS-PC construction bonds the polycarbonate shell directly to the foam liner during manufacturing, producing a structure that is simultaneously lighter, more durable, and better at distributing impact energy than a conventionally assembled helmet.

Ventilation is handled through a wide air-exhaust outlet system positioned at the rear of the helmet, creating a pressure differential that actively draws warm air out during high-output efforts. This design is particularly relevant for riders who transition between road and trail use, where climbing grades and variable pace generate significant heat load. The fit system combines overall size adjustment with independent crown height tuning — a combination that accounts for the variation in both head circumference and vertical profile that a single-dial system frequently cannot resolve without pressure points. Sunglasses garage integration, a removable rear reflector, and compatibility with fi'zi:k's integrated helmet light make the Kyros a complete, low-friction daily option for cyclists who cover diverse terrain across a full week of riding.